new york republican presidential nominee donald trump pick endorsement monday union represent 5,000 federal immigration officer boost support immigration policy ahead first debate democrat hillary clinton trump lay hardline position illegal immigration propose build wall along u.s. southern border mexico take step crack flow undocumented people cross unite state immigration likely discuss debate national immigration customs enforcement council union represent 5,000 federal immigration officer law enforcement support staff announce would support trump describe first endorsement candidate elect office union president chris crane outline statement group back trump say union members last line defense american communities members prevent enforce basic immigration laws cnn/orc poll release sept. say among register voters 49 percent say trust clinton handle immigration slight advantage trump 47 percent crane say endorsement conduct vote union membership clinton receive percent vote ahead debate trump endorse u.s. immigration officer