In a statement, the Washington-based law firm said it is providing legal counsel to Halliburton and is not lobbying in connection with the investigations. That likely means the firm’s lawyers will have little or no contact with lawmakers, but they could assist Halliburton in responding to requests for documents or in preparing for testimony.

“The firm is representing Halliburton in the capacity of lawyers as Halliburton responds to multiple ongoing Congressional investigations,” the statement reads. “The firm is not acting as a lobbyist in any of these investigations.”