President Trump's bid to keep Alina Habba in charge of the U.S. attorney's office in N.J. faces a new test after a defendant filed a motion challenging her authority.

In a span of eight days, Alina Habba was accused of violating the Hatch Act; removed as interim U.S. attorney by district court judges and replaced with a career prosecutor who was quickly fired by the Trump administration; and then named acting U.S. attorney.