Associated Press: A U.S. Senator has introduced a bill that would require oil companies to dig emergency relief wells at all new drilling sites off the U.S. coast. Sen. Frank Lautenberg, D-N.J., said Tuesday that the rig explosion that unleashed millions of gallons of oil into the Gulf of Mexico proves that pre-emptive drilling is needed. The measure was introduced days after The Associated Press reported that BP and the government rushed through environmental reviews, permits and other plans …