The ranking GOP member of the Senate Finance Committee wants Congress to reconsider new funding to the National Science Foundation amid allegations that top staffers spent long stretches of their day surfing the Internet for pornography. Sen. Charles Grassley, R-Iowa, sent a letter to the foundation’s Office of Inspector General on Tuesday seeking all documents it has related to the inappropriate use of the foundation’s network. The foundation is the major source of federal backing in fields such as mathematics, computer science and social sciences.