Anyway , there 's not much evidence to suggest that travel ban was successfully enforced or effective . The last time the U.S. enforced some kind of health - related travel ban was with HIV / AIDS . The U.S. did n't enforce travel bans with the more contagious flu and swine flu viruses . Top health officials say a ban would n't work and would make the situation worse .
The last time the U.S. enforced some kind of health - related travel ban was with HIV / AIDS . The U.S. did n't enforce travel bans with the more contagious flu and swine flu viruses . Top health officials say a ban would n't work and would make the situation worse .