Actually, I'd swap Zero for any of the past Presidents, including that old communist FDR. At least they were all Americans.
Compared to today’s Democrats, FDR wasn’t that bad. Reagan admired him. FDR believed in opportunity rather than welfare, and I believe was against public unions.
FDR may been born an American, but he was as Red as they come. Read Paul Kengor’s book about Frank Marshall Davis (The Communist). I’ll bet there’s some stuff in there most people have never heard before.