u.s. senate democratic leader chuck schumer sunday demand president donald trump reverse executive order target immigration seven predominantly muslim countries say make unite state appear less humanitarian less safe less american must reverse immediately democrats go introduce legislation overturn schumer say new york schumer also say tell u.s. homeland security secretary john kelly 42 people detain u.s. airports would process allow enter country court order issue saturday night schumer say kelly also tell trump executive order would affect green card holders contradict previous administration statements u.s. senate democrat leader demand reversal immigration order