The White House said Tuesday it is cooperating with Congress’s Russia investigation, despite communications director Hope Hicks Hope Charlotte HicksSenate intel leaders said Trump associates may have presented misleading testimony during Russia probe: report Cuomo turned down Trump invitation to participate in April press briefing: report Trump shakes up White House communications team MORE’s reported refusal to answer certain questions from the House Intelligence Committee.

"I'm not going to comment on any individual's interactions with the committee,” White House press secretary Sarah Huckabee Sanders said when asked whether the White House directed Hicks not to answer certain questions.

“We are cooperating because, as the president said repeatedly, there is no collusion," Sanders said.

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Intelligence panel members from both parties said Hicks declined to answer questions about events and conversations that took place since President Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE’s inauguration.

The move frustrated lawmakers who are probing Russia’s interference in the 2016 election and whether the Trump campaign cooperated with the effort.

Hicks is one of Trump’s longest-serving aides, having worked with the Trump family since before the real estate mogul entered the presidential race, making her testimony valuable to congressional investigators.

Former White House chief strategist Stephen Bannon also declined to answer questions from the House Intelligence Committee about the period after Trump's inauguration and the transition, arguing the White House might want to invoke executive privilege about those discussions.