People look out where a border structure separates San Diego, right, from Tijuana, Mexico, left, Jan. 25, 2017. President Donald Trump has moved aggressively to tighten immigration controls.
People look out where a border structure separates San Diego, right, from Tijuana, Mexico, left, Jan. 25, 2017. President Donald Trump has moved aggressively to tighten immigration controls. Julie Watson AP
People look out where a border structure separates San Diego, right, from Tijuana, Mexico, left, Jan. 25, 2017. President Donald Trump has moved aggressively to tighten immigration controls. Julie Watson AP