The numbers say the crisis of would-be immigrants at America’s southern border is easing.  Far fewer people are trying to cross, legally and illegally, than 6 months ago.  But tens of thousands of migrants are still there, in American detention facilities, and stoppered in shelters, camps and open fields on the Mexican side of the border.  Jens Erik Gould of the Santa Fe New Mexican on the Border Patrol officers dealing with a crisis that may no longer be growing, but isn’t going away either.