McALLEN, Texas – The Trump administration has scaled back a key element of its zero-tolerance immigration policy amid a global uproar over the separation of more than 2,300 migrant families, halting the practice of turning over parents to prosecutors for charges of illegally entering the country. Customs and Border Protection Commissioner Kevin McAleenan said Monday that President Donald Trump’s order last week to stop splitting immigrant families at the border required a temporary halt to prosecuting parents and guardians, unless they had criminal history or the child’s welfare was in question.