1/25/2017 New York Times
WASHINGTON — President Trump’s homeland security secretary, John F. Kelly, has been clear about his views on a border wall with Mexico: It won’t work.
When asked by senators about his views on a border wall during his confirmation hearing this month, Mr. Kelly, a retired general, said a “physical barrier will not do the job.”
Mr. Trump said on Wednesday that he would order the construction of a wall along the United States-Mexico border, fulfilling his campaign promise to crack down on illegal immigration and stop the flow of drugs coming into the United States.
Mr. Kelly said that a wall would be effective only to the extent that it was backed up by far more sweeping measures.