"Disinformation, fake news, online propaganda is a problem that has gotten attention all over the world, and we're seeing very divergent responses," says Schiffrin, author of "Bridging the Gap: Rebuilding Citizen Trust in Media." "I think the U.S. is going to do what it always does, which is look for free-market solutions and try lots of small-scale initiatives, and Europe is going to do what it tends to do, which is have more regulation."