Sen. Dianne FeinsteinDianne FeinsteinMeet the man who sparked the Democratic revolt on guns Post Orlando, hawks make a power play Ryan: No plans to vote on Democratic gun bills after sit-in MORE (D-Calif.) said Sunday that the U.S. visa waiver program poses a threat to national security by making it easier for terrorists to enter the United States.
"[Terrorists] could come back from training, they go to a visa waiver country and they could come into this country."
The California Democrat was responding to the attacks in Paris last week in which Muslim extremists targeted satirical newspaper Charlie Hebdo and a Jewish deli. Seventeen people died.
Critics have said France was lax in tracking the three men behind the attacks, all of whom were killed last week. Feinstein replied that it's "difficult to ferret someone out" as they travel country to country.
"There are stolen travel documents in large numbers," she said. "They could pick up a false passport. … We have a big problem there."
Defenders of the U.S. visa waiver program said it has heightened U.S. security by increasing intelligence sharing between countries.