good evening, and we have several developing stories tonight, and we begin with the simmering tension across this country. those for and against president trump's immigration crackdown. and today, the president called it a military operation at the border. after we offered those words during a meeting at the white house, his own homeland security secretary had very different words about the operation. so which is it? abc's matt gutman on the crackdown and how it's being enforced. he is not far from the border in arizona tonight. >> reporter: at the white house today, president trump declaring his new immigration crackdown a mooring success. >> we're getting really bad dudes out of this country, and at a rate that nobody's ever seen before, and they are the bad ones. and it's a military operation. >> reporter: a military operation? not according to homeland security secretary john kelly. >> no. repeat, no use of military force in immigration operations. none.