Border Wall
Homeland Security Secretary Jeh Johnson said the enforcement efforts aren't changing, despite criticism.
Last year's decline in border apprehensions has been reversed.
Officials believe the terrorist suspect passed through five countries before he reached the French capital.
"Legal? Good. Illegal? Bad."
WHAT'S HAPPENING
The comedian says the real estate mogul is forgetting something important.
The government has only interviewed 90 of nearly 4,000 applicants.
Even so, border apprehensions are still down from last year.
The GOP candidate said he'd consider securing the Canadian border with a wall.
Walker said building a northern wall is a "legitimate" issue to look at.