According to this article from Reuters,
CBS News Escapes Gov't Scrutiny over Bush Memo, the House won't be investigating CBS in connection with the Guard memos. The chairman of the committee, Joe Barton, R-Texas, says an investigation would be "inappropriate".
Gee, yesterday the GOP was screaming for Rather's head on a pike. Could it be that the White House let Barton know that an investigation wouldn't be...prudent? Imagine the dirt that an investigation would bring out.