Alan Grayson supports it too, so it seems like travel bans have bipartisan support:
http://www.huffingtonpost.com/...
The main complaint from the CDC and others against bans would be that it would stop aid workers from getting to the region. That can be addressed by allowing medical workers and other people from governments & NGOs that are going there to help. Another step would be to stop issuing and terminate existing visitor visas for people from those countries if they haven't entered the US, UK, or whatever country issued the visa. That would stop people from legally traveling to another country that isn't on the restricted list and then go on to their expected destination. Sure, people could find ways around it, which also highlights the need for a better means of screening & quarantining passengers. IMHO, the "it's not 100% effective, so let's not even try" mantra is just crazy. It would be like a doctor, nurse, or some other medical personnel saying "condoms aren't 100% effective, so don't bother putting one on. Come back and see us if you think you've caught something".