President Donald Trump’s administration plans to consider almost all illegal immigrants subject to deportation, but will leave protections in place for immigrants known as “dreamers” who entered the United States illegally as children, according to official guidelines released yesterday. The Department of Homeland Security guidance to immigration agents is part of a broader border security and immigration enforcement plan in executive orders that Republican Trump signed on Jan. 25. Former President Barack Obama, a Democrat, issued an executive order in 2012 that protected 750,000 immigrants who had been brought into the United States illegally by their parents.