Twenty former U.S. attorneys from both political parties have sided with Congress in its subpoena fight with the White House.

The former prosecutors filed court documents Thursday in Washington saying Congress must have the authority to demand answers from the Bush administration about whether U.S. attorneys were fired for political reasons. The House Judiciary Committee has subpoenaed two of President Bush's closest advisers but the White House says they don't have to comply.

Congress wants the courts to settle the issue. The former prosecutors say it's important for the court to step in because, without congressional oversight, nobody could make sure the president wasn't abusing his authority.