They can't multiply their numbers by procreating but gays would be able to double the numbers of gays in this country with this scheme.
Like mail order brides but they don't even have to be married. The foreign prospective spouse pays an agency here to set him up with a partner in the US and the citizen would split the money with the agency.
They can then use that money for the gay lobby and force homo adoption through the liberal courts. That way, they can adopt their very own sex toys...........er......I mean "children."