Not a lot of exciting ones?
Since immigration is a hot topic right now:
In 1996, under President Clinton the U.S. government introduced the so-called "wet feet, dry feet policy" which reduced the application of the Act. This was further reduced by executive orders signed by President Obama in 2016.
"Effective immediately, President Obama said in a statement, “Cuban nationals who attempt to enter the United States illegally . . . will be subject to removal,” treating them “the same way we treat migrants from other countries.”
Say it's not so (-: