Under the Obama administration, agents had discretion in cases of immigrants with gravely sick children. Under Trump, officers are told to enforce the law "to the greatest extent practicable."
An expert on electronic privacy walks through the possibilities and perils on a national online security system designed, in part, by the U.S. Department of Homeland Security.
Should the U.S. and Europe bring back the visa? Because "visa-free travel" to America no longer exists