I remember my mother telling that joke 30 years ago.
I simply don't see the hubbub over this. It's not like he said "for the first time in my adult life, I'm proud of my country because Rick's running for President."
Foster's joke was funnier than a month's work of "jokes" from Bill Maher, Margaret Cho, and Rosanne Barr combined.
I admit to a more outrageous brand of comedy, such as the late, great Sam Kinison.