Tribune photos by Gary R. KiefnerWASHINGTON (AP) - The Supreme Court today agreed to decide whether President Nixon acted within his powers in withholding $9 billion appropriated by Congress for water pollution control.The court will review next term a Court of Appeals decision striking down the impoundment of the funds by Russell Train, administrator of the Environmental Protection Agency, who acted on the President’s grants. Train allotted $2 billion for 1973, $3 billion for 1974 and $4 billion for 1975.•Courts have improperly cut refreshments for those taking the tours.In a brief filed with the court, the government said the case “has important ramifications for the power of the executive branch to coordinate and control the federal government’s spending process in light of the need for economic stabilty and the limitations on federal resources.Open House Gives Youngster A LiftFundWithholding Question Will Go ToSupremeCourtThe turnout was light Sunday at the open house conducted by the Army Reserve’s 397th Engineering Battalion-Company B at the Onalaska Armory, but 2-year-old Robert Vetsch (above right) had a ball trying to drive an end loader that was on display. He is the son of Mr. and Mrs. Dale Vetsch, Caledonia. Minn.The annual open house attracted the company’s first enlisted woman, Mary Urban of Viroqua. who is being shown the M-60 machine gun by 2nd Lt. Darrell Washburn, 1141 Main St. Miss Urban was sworn into the unit in Saturday ceremonies.Other displays were about model bridges, trailers and mine detectors. There were rides for children in jeeps and trucks. Tours of armory facilities focused on administration, supply, arms room and maintenance areas.And, of course, in the mess section there were