Top Commerce and Treasury Departments officials appeared with Republican candidates and doled out millions in federal money in battleground congressional districts and states after receiving White House political briefings detailing GOP election strategy.

Political appointees in the Treasury Department received at least 10 political briefings from July 2001 to August 2006, officials familiar with the meetings said. Their counterparts at the Commerce Department received at least four briefings — all in the election years of 2002, 2004 and 2006.

The House Oversight Committee is investigating whether the White House's political briefings to at least 15 agencies, including to the Justice Department, the General Services Administration and the State Department, violated a ban on the use of government resources for campaign activities.