Advena Legion

History
In March of 2017, President Luthor announced his 'Earth Hospitality Act' which popularized the term 'Xenohuman' and created the 'Advena Legion'. Though the measure has yet to be officially approved, it's actually being well received and is expected to be made into law soon.

The Advena Act creates the possibility for alien refugees and travelers to become official citizens of the United States (and thereby Earth) through a process of enlisting in a public service, like fighting crime as a member of the 'Advena Legion' (or more colloquially known as the 'Legion of Superheroes' or 'Legion of Alien Heroes') or working at NASA or for the NSA, DEO, or even just building infrastructure or whatever.

Applicants for the program are monitored by the DEO and are assigned a handler. Their handler determines where their skills, talents, powers, etc. would be best utilized and then monitors their progress after placement. If they fulfill the terms of their placement for a specific period of time, they are given official citizenship and even have the option of assuming a normal human identity if they so choose (and are so able to disguise themselves as such). Once placed, aliens in good standing are given 'xenohuman' status under the law and are afforded all the rights and privileges of a normal human.

The Advena Legion is the big flagship of the program and while the rest of the program has yet to really be implemented and enacted, awaiting legislation and funding, the Advena Legion is already being formed under the Executive Branch of the US government.

Trivia and Notes

 * The Advena Legion is inspired by the comic's Legion of Superhores, who were the galaxy's heroes in the 30th century. But because of the "No Time Travel" rule of Earth-27, that means they're not a team from the far-flung future, nor are they time-travelers. They are contemporary aliens in modern day.
 * The same way, most of the members names had been changed to reflect their alien nature.
 * Superman, Power Girl, Supergirl, Martian Manhunter and Miss Martian These are members who were already given 'Xenohuman' status by President Luthor in exchange for time and injuries already sustained in public service (and also in exchange for their support, even just token support of the bill).
 * Superman was the first one announced by President Luthor. But he didn't accept the offer until some weeks later.
 * The legionaries aren't allowed to have secret identites as part of the Advena Legion.

Links and References

 * Appearances of the Advena Legion
 * Team Gallery: Advena Legion
 * Membership of the Advena Legion