By Trevor Hunnicutt WASHINGTON (Reuters) – The White House on Thursday told Republicans hoping to investigate President Joe Biden that their requests for information for probes, including on the Afghanistan withdrawal, are improper until those lawmakers take over the House next month. Biden’s special counsel, Richard Sauber, told two Republican lawmakers expected to hold top oversight posts in the next Congress that they lack authority now and would need to redo requests for materials they’ve already sent to the White House once they’ve taken control of Congress. Sauber told Representatives Ja…