Preface: I wanted to put together an easy-to-reference guide that details the various government organizations of the United States and a basic overview of other countries in Champions Universe and how it relates to superheroes so people can figure out how their character relates to the government better. All the information is taken from the Champions Universe source book, I avoided using direct quotes whenever possible, but a lot of it is paraphrased
The "Official" superhuman of the US government, starting in 1969 in response to poor government sentiment due to Vietnam. The first All-American was Gerald Thomston, a product of Project Perseus, (a partially-successful super soldier experiment); however, there have been four men and one woman who've worn the mantle, the current All-American is Jack Tiptree. Every All-American has gone through the Perseus treatment, which enhances their natural ability to near super-human levels. The Perseus treatment is a classified government secret.
The American Superhuman and Paranormal Registration Act (ASPRA) is generally known as just "The Registration Act". It's a part of the Bureau of Alcohol Tobacco and Firearms (BATF) and was started in 1980 after Dr. Destroyer nearly managed to take over the United States. It requires anyone with superhuman abilities to register with the government and give identification data, including their real name and location. It was extremely unpopular with superhumans when it started and very few registered. Technically any superhero who doesn't register is considered an outlaw, however the government was unable to force superheroes to register, due to the severe public backlash that would have came from arresting a popular superhero. Instead, they maintained a database with information on every captured supervillain and offered it to the hero community on the condition that they register first to have access to it. The database eventually became one of the most extensive superhuman databases in the world (second only to UNTIL's), and has a track-record of never having been hacked. Over the years, ASPRA has become more or less accepted by the superhuman community. Unregistered heroes are generally not arrested, but they also don't get access to all the provisions and protections the government provides to registered heroes.
The Department of Superhuman and Paranormal Affairs (DOSPA) was founded in 1986 alongside PRIMUS in response to Mechanon's near successful takeover of the US. It's primary duties are to coordinate the reaction and response to Superhuman issues as well as manage superhuman resources and handle superhuman and supertech research. It has jurisdiction over all superhuman and paranormal affairs, and all superhumans associated with the government ultimately answer to it, whether or not they work for a completely different agency. It is split into 8 parts: Alien Affairs, Diplomatic Affairs, Military Affairs, Research & Development, Supertechnology Affairs, and World Security Affairs. The current head of DOSPA is the Secretary Andrew Rochester. He holds a positive view of superheroes, especially ones that work for the government, however, there are some in DOSPA who are untrusting of superhumans and wish to take a more harsh view on them.
The Paranormal Research and Investigation Mission of the United States (PRIMUS) was founded in 1986 after a near successful Mechanon US take-over attempt as a part of the Department of Justice along with DOSPA. It functions as the superhuman law-enforcement arm of the US Government, and was created partially to sway public opinion after the US had refused UNTIL the right to operate in the United States (They have since reversed this stance). Most of PRIMUS is normal humans using advanced technology, however a portion of it centers around a mildly-addictive drug called "Cyberline" which gives superhuman strength and superhuman reflexes if taken on a daily basis. The leader of PRIMUS is code-named the "Golden Avenger" and utilizes a group of cyberline-active primary agents called "Silver Avengers". Many PRIMUS agents, especially the Silver Avengers resent superheroes as being unprofessional renegades. The current Golden Avenger is Daniel James "DJ" Johnson.
Department of Defense:
The DoD has worked with Superhumans in wars since superhumans started appearing in WWII. It currently employs 5 Superhumans: Victory (Air Force), Fusillade and Bulwark (Army), Swordfish (Navy), and an unidentified hero who works for the DIA. DARPA also occasionally employs heroes for research and development help.
The Superhuman Survey is an annual survey conducted by the Department of Defense since 1972. The primary purpose is to keep track of and classify supervillain and supervillain group threats, which it ranks as Omega, Delta, Beta, and Alpha. Omega is the most dangerous, reserved for superhumans and groups who represent a threat to the entire world, (Dr. Destroyer has been considered Omega level since his appearance in 1975 until his "death" in 1992), Delta is considered a threat on a national level, and so on. Most villains are considered Beta/Alpha level threats. Note, however that this is ranked by threat, not power, for example: Grond is ranked as Beta level because even though he is immensely powerful, Grond generally isn't interested in coordinated attacks on the country or world. The DoD sells a redacted version to the public, which some supervillains use to brag about their rank with.
Department of justice:
The Department of Justice offers police sanctions to registered superheroes that gives the government police powers on the level of an FBI agent. These sanctions are rarely permanent and those that are, are subject to periodic review. To earn sanctions a hero must be registered, responsible, and have a positive attitude towards working with the government. Additionally, sanctions will often come with strings attached, such as data-sharing on seized super or alien technology with the government, or accepting a government liaison on to a superhuman team as oversight.
The FBI resents PRIMUS for taking over their jurisdiction on superhuman crime in 1986. They employ 8 superhumans, 2 in New York (Tarantula and Firebrand), 2 in Millenium City (Kodiak and Teknique), 3 who are mobile and go where they're needed (Bellatrix, Insight, and Proton), as well as one who deals with hostage rescue (Stalwart). The current FBI Director is Hamilton Parks, and shares the Secretary of DOSPA's positive views on superhumans.
The DEA generally doesn't employ superhumans, as their work deals more with undercover operations and intelligence work. However, they've been known to employ superhumans occasionally to help with border patrol and drug-trafficking across bodies of water.
NASA monitors extraterrestrial activities on the planet and off it. They maintain arguably the world's most extensive database on extraterrestrial life. NASA often employs superhumans to help with research and development, build technology, and get rockets safely off the ground.
Law Enforcement agencies have come to learn how to deal with the presence of superhumans, and will work with both sanctioned or unsanctioned heroes. If they need to deal with superhuman threats but have no superhumans to help, they use special units called Metahuman Activities Response Squad (MARS), which use super technology up to light power-armor. MARS track record has been questionable and is sometimes considered to be a huge drain on government resources for little gain, but the MARS units claim to have made a huge difference.
MCPD Special Unit Omega (SUO)
Founded in 1999 in response to MARS inability to stop the villain Holocaust, the Special Unit Omega is to MARS as MARS is to the MCPD, an even more specialized branch designed to handle the toughest of villains. Run by Tim "Cannon" Connoly, it features only 8 members, but all of which are considered to be the best of the best. Today it is a firmly-established part of the MCPD, highly successful at what it was intended to do: handle the worst of the worst villains.
Due to a low-level of super-human activity, there is no official superteam or superhuman policy. The government will work with independent heroes however.
Canada has policies that mirror the US. In the past they've had a national superhero team called "The Northern Guard" which has had a spotty track record, and has broken up on repeated occasions before reviving with new or all new members. The last team existed from 1993-1998 after breaking up, since then Canada has had no official superhero team.
Chinese superhumans exist either as servants of the state or outlaws. When a superhuman is discovered, they are taken to a special training facility in a secret location in China. Once properly trained, they become a member of China's official superhuman team: The Tiger Squad, which is the largest superhero team in the world at over 50 members. Superhumans who manage to avoid government capture are branded as criminals and may be executed if caught. Nearly all the renegade superhumans and even a few members of Tiger Squad support China's pro-democratic movements.
France has had a more harsh version of ASPRA since 1986, and many of it's superhumans have gone underground or fled the country to avoid it. France's superteam is called "The Sixteenth Bureau" but is referred to as "The Vanguard" by it's 3 members: Tricolor, Volt, and Musketeer.
The exploitation of superhumans in WWII led to it being a sensitive subject for Germany, and it was generally ignored in the media until the 80s, when memories began to fade and the practicality of superhumans became apparent. Since 1991, Germany has had a policy of registration for superhumans similar to Great Britain's and will often grant temporary sanctions to superhumans.
Britain has had a long and proud history of superheroes dating back to WWII. Superhuman affairs were initially managed by a secret branch of the government called "Bureau S", which employed many superheroes on an unofficial basis. After 1966, Bureau S went public and was re-branded the Ministry of Superhuman Affairs. Britain has had a registration law since 1978, which is similar to the US, except that registration is voluntary and doesn't require the superhuman to reveal their secret identity if another means of consistent identification can be secured (such as fingerprints). Britain's superhero team is the Knights of the Round Table, and has been active since 1971, though it has undergone many roster changes. It enjoys popularity with the people and often works with UNTIL.
Due to having two hostile neighbors, India has worked hard to develop a superteam for protecting their borders and their country from nuclear attack. Their superhuman team is called "The Superhero Division" and is officially a part of the Indian Army's Central Command. The division has 14 members, 2 of which (Rashindar and Ushas) are considered to be some of the most powerful superhumans in the world. India has a thriving population of superhumans and employs a registration act similar to the US, but rarely enforces it due to strained resources.
Due to being surrounded and outnumbered by hostile countries, Israel has a superhuman registration law that it strictly enforces. However, it has no superhero team, instead it employs a dozen superhumans directly as a part of the Israeli government who are tasked to go where they are assigned by their commanding officers. All of them are popular with the Israeli people, and hated by the Palestinian people.
Japan has no superteam and no registration law, but works closely with independent heroes. Japan's citizens absolutely love superheroes both of their nation and other nations, and that attitude is reflected by the Government.
During the Soviet Era, Russia maintained a superteam called "The People's Legion" The People's Legion often clashed with American superheroes, but also worked with them to prevent disasters and save lives. When the Soviet Union crumbled, so did the People's Legion. Russia outlaws all superhuman activity not sanctioned by the state, but aren't able to fully enforce it. Several former Legionnaires as well as a new generation of younger heroes have been illegally fighting crime on their own.