BUT NO TRAVEL LIMITATIONS: President Obama vows tough passenger screenings to stop the spread of Ebola.

I was talking to my mom the other night, and she remembered that back when I was a kid, they made her get a chest x-ray before they’d let her back in the the US after a year in Germany. They made us all get re-vaccinated for smallpox, too. And some English friends traveling to Harvard had to spend most of a day at the airport because one of their kids couldn’t prove vaccination. Nowadays, the travel restrictions seem a lot laxer, even as the disease threats are worse.