The acting director of national intelligence is refusing to comply with a subpoena to turn over a whistleblower complaint , setting up a legal showdown this week between the Trump administration and a House committee.

The House Intelligence Committee chairman tells CBS� �Face the Nation� that intelligence chief Joseph Maguire declined to release the complaint because he was instructed not to by a �higher authority� since it involves privileged communications.

Democratic Rep. Adam Schiff says no intelligence director has ever refused to turn over a whistleblower complaint to Congress.

Schiff says the committee will �do everything necessary� to get the complaint.

The committee is requiring that Maguire testify Thursday unless he complies with the subpoena.

Schiff isn�t revealing the subject of the whistleblower�s complaint.

(AP)