Federal Judge Paula Xinis is at the center of the case of a Maryland man mistakenly deported to El Salvador by the Trump Administration that has emerged as a critical test of Trump’s aggressive crackdown on immigration in the United States.

Experts say President Nayib Bukele has the power but not the interest to return a man deported from Maryland to El Salvador in error.

The President escalated a fight with the Supreme Court over a wrongfully deported man, proposing to send U.S. citizens to El Salvador next.