Washington, D.C. ? President Bush is expected to claim executive privilege to prevent two more White House aides from testifying before Congress about the firings of federal prosecutors.

Today is the deadline for Karl Rove, Bush’s top political adviser, to provide testimony and documents related to the firings, under a subpoena from the Senate Judiciary Committee. Also subpoenaed was White House political aide J. Scott Jennings. The Justice Department included both men on e-mails about the firings and the administration’s response to the congressional investigation.