Diego M. Radzinschi/ ALM

Apparently unsatisfied with that response, Nelson asked, “Why can’t you just say that I’m going to get involved in Takata?”

“The fact is that you were one of the main advocates for a company that has done dastardly things and has, according to U.S. attorneys, violated criminal laws,” Nelson continued. “Now, we just need the understanding as a committee that you’re still not going to be an advocate for Takata.”

Bradbury said he assisted Takata in coming forward and disclosing the issues with its air bags. “I agree entirely that they have a long way to go,” Bradbury said. He added that he would not be an advocate “for that company or any company.”

In addition to Takata, Bradbury, a Dechert partner since 2009, advised American Airlines, Time Warner Inc., the U.S. Chamber of Commerce and Verizon, according to his financial disclosure form. He did not identify three confidential clients—two individuals and one organization—whose matters, he said, were subjects of nonpublic government investigations.

“I’ve been in government previously, and I clearly know the difference between representing a client in private practice and representing the United States as an attorney,” Bradbury said Wednesday.

Bradbury, who clerked for Justice Clarence Thomas in the 1992 term, contributed $2,700 last year to U.S. Sen. Marco Rubio’s presidential campaign, federal election records show. A year earlier, he donated the same amount to JEB2016 Inc. Bradbury in 2011 contributed $2,500 to Mitt Romney’s presidential run.