"Visa waivers could help terrorists enter US"

"Homeland Security Secretary Jeh Johnson acknowledged concerns Friday that terrorists might use the visa waiver program to enter the United States, and said his department is taking steps to address weaknesses in the program."

"To deal with the foreign fighter potential, the foreign fighter threat presented now globally, we need to develop more robust information sharing with our key counterterrorism allies overseas to share information about individuals of suspicion," Johnson said. "There is much work to be done."

Jeh Johnson

Dianne Feinstein: Terrorist sleeper cells are in the U.S.