The Trump administration will introduce new restrictions on travel to the U.S. by refugees and migrants from six countries as of 8 p.m. eastern time Thursday, according to a person familiar with the matter. The rollout of the measures, which follows a U.S. Supreme Court decision Monday allowing parts of an executive order to proceed, is being led by the State Department. The timing is aimed at giving embassies and consulates sufficient direction on how to implement the protocol before it comes into effect.