Washington: Donald Trump's top aides must comply with subpoenas to appear in the impeachment probe against the president, a US federal judge ruled. In a case involving former White House counsel Don McGahn, who was subpoenaed in May by the House Judiciary Committee, appeals court judge Ketanji Brown Jackson ruled on Monday that administration officials cannot claim absolute immunity from testifying, as Trump had earlier claimed, according to CNN.

While Jackson ruled specifically on McGahn's case, she said it had broad application to all current and former presidential aides. “Presidents are not kings,” Jackson wrote in her decision. “No one, not even the head of the Executive branch, is above the law.”