The White House told Congress on Sunday night that it wants a border wall and new limits on legal immigration in return for allowing people illegally brought into the United States as children to remain here ― demands top Democrats say renege on a deal President Donald Trump himself made with them last month. Among the priorities listed in a letter Trump sent to congressional leaders: enough money to build a wall along the Mexican border; changes to deportation laws that would make it easier to send undocumented immigrants, including unaccompanied children, back to their home countries; crackdowns on sanctuary cities; an end to “chain” migration, which makes it easier for immigrants to sponsor extended family members; and creating a “merit”-based immigration system to cut down on the entry of unskilled workers.