WASHINGTON (AP) — The White House on Tuesday again directed former employees not to cooperate with a congressional investigation, this time instructing former aides Hope Hicks and Annie Donaldson to defy subpoenas and refuse to provide documents to the House Judiciary Committee.

The letters from the White House to the Judiciary panel are the latest effort by the White House to thwart congressional investigations into President Donald Trump . Trump has said he will fight "all of the subpoenas" as Democrats have launched multiple probes into his administration and personal financial affairs.

Hou...