Winston & Strawn’s Abbe Lowell has tapped former federal prosecutor Carol Elder Bruce to represent him as he and other attorneys representing those in President Donald Trump’s orbit face scrutiny from the U.S. House Intelligence Committee.

The intelligence panel, led by Rep. Adam Schiff, D-California, is reportedly probing whether the four attorneys—Lowell, Jay Sekulow, Alan Futerfas and Alan Garten—were involved in alleged efforts to obstruct the panel’s investigation into Russian interference in the 2016 U.S. election. Specifically, the committee is said to be investigating whether the lawyers were involved in editing false testimony that Trump’s former personal lawyer Michael Cohen provided to Congress in 2017. The panel sent all four requests for information, which their lawyers in a collective statement issued Tuesday slammed as part of a “truly needless dispute.”

The statement said: “Instead of addressing important intelligence needs, the House Intelligence Committee appears to seek a truly needless dispute—this one with private attorneys—that would force them to violate privileges and ethical rules. As committed defense lawyers, we will respect the Constitution and defend the attorney-client privilege—one of the oldest and most sacred privileges in the law.”