Decline in migration under Trump could quickly reverse, history shows

Last month's 40 percent decline in migrant detentions along the southern U.S. border represents a victory for U.S. President Donald Trump, but may prove short-lived unless he follows through with his hard-line vows, past experience shows.Trump's administration on Wednesday trumpeted the February decline as evidence its executive orders on immigration were working, fulfilling his promise to crush illegal migration."Right now, nobody wants to go" to the United States, said Victoria Cordova, who al