fingerprinting

For decades, a visa waiver program has allows passengers from 38 countries to visit the US without advance approval for 90 days or less.

A clampdown on a US visa waiver program might spark unintended consequences

Conflict

Changes afoot after the attacks in Paris and San Bernardino will make it more difficult for citizens of 38 so-called “friendly” nations to visit America. Some 60 percent of all international travelers who visited the US last year entered via the visa waiver program. Now that program is likely to be tightened.