President Joe Biden’s administration is spending roughly $60 million a week to shelter illegal immigrant children who cross into the country from Mexico. Known as unaccompanied children, caring for the minors has driven the price tag for immigration-related expenses up sharply as U.S. officials grapple with the surge that some experts and Republicans say stems from Biden’s reversal of key Trump-era policies. Over 18,600 unaccompanied children were apprehended after crossing the border in March, more than double the figure from the month before, sparking fears of a MS-13 resurgence. Nearly 18,800 are being housed in Department of Health and Human Services (HHS) facilities as officials try to locate a family member or other responsible adult to whom they can send each child. The average length of care for the children is 37 days as of the end of February. The average daily cost to care for a child in a …