Trump avoids key question about immigration

In his saturday Iowa speech, Trump said he would strengthen the system that allows employers to verify the eligibility of workers andcreate a visa tracking system.
He also declared he would deport all undocumented immigrant that committed crime:We are going to get rid of these people, day one, before the wall, before anything"But he still declined to clarify whether he would forcibly deport the undocumented immigrants who have been in the country and not committed a crime, something he had promised during his primary campaign.