including in the san diego, yuma, tucson, el paso, del rio and rio grande valley border patrol sectors. and sources telling fox news there have been more than 300,000 known individuals at the border in the last six months alone and critics say that it is time for the secretary to be treating this crisis as a national security issue. he s the secretary at homeland security. when does he have enough integrity to say hey, i cannot keep this border open no matter what without creating a national security issue of the highest proportion. fox news has also revealed that there were over 221,000 migrants encountered in march, the highest number since president joe biden took office. revealing dhs released over 80,000 migrants from federal custody into the united states in march, and expelled more than 109,000 using title 42 and a