In the "Civil War Files" handbook that just came out there's a preface in the form of a letter from Tony Stark to the president talking about the Registration Act. One of the things he says:
I assumed that this was pretty much forgotten by Marvel. Nice to see some of the latter-years AF stuff is still remembered.Even Canadian legislators had no problem passing similar legislation, although their version of the Registration Act was eventually held unconstitutional by the supreme Court of Canada.