Of the members of the Senate Select Committee on Intelligence, four voted against Christopher Fonzone’s nomination, including senators Ben Sasse of Nebraska, Marco Rubio of Florida and Tom Cotton of Arkansas.”You can’t work for Huawei and then work for the Director of National Intelligence,” Sasse said in a statement released on Wednesday.

The U.S. Director of National Intelligence is the head of the U.S. intelligence community and acts as the principal intelligence advisor to the president, the National Security Council, and the Homeland Security Council.

Fonzone served as legal adviser to the National Security Council during President Barack Obama’s second term. He joined law firm Sidley Austin, which also does lobbying work, in November 2017, and did legal work for China’s Ministry of Commerce and Huawei — though fewer than 50 billable hours for each, according to a questionnaire he filled out for the committee.

When Huawei was under U.S. regulatory scrutiny in 2019, at least three attorneys from Sidley Austin were registered to lobby on behalf of the Chinese company, according to the National Law Journal.

Huawei did not immediately respond to CNBC’s request for comment.