Yesterday, the House of Representatives picked the leaders of 19 committees for the upcoming 113th Congress yesterday and every one of them is a white male. As the majority party, the Republican caucus gets to pick who holds each chairmanship in their House and every vote in this week's closed door meetings went to a ranking male.
Unfortunately for the party, they don't have a lot of diversity candidates to choose from. There are only twenty female Republicans in the House and even fewer minority legislators on that side. Also, because seniority often rules the day in Congress, the GOP women who have been elected are usually at the back of the line for appointments. One of the more experienced Republican women in the House, Candice Miller of Michigan, was considered a option to lead the Homeland Security Committee, but she's currently eighth in seniority among committee members.
In the current Congress, there is only one female Republican committee chair, Ileana Ros-Lehtinen, and she is stepping down when the term ends. There are two committees that have yet to elect a chair for next, but neither one currently has any Republican women serving on it.