Too late for that. US helped evacuate cornered thousands of Taliban fighters in 2001 from Kunduz, Afghanistan (google it). Same guys are now picking up NATO soldiers one by one.
US has no leverage over over Pakistan-never had, though US always thought they controlled Pakistan. What USA did not see (or did not want to see) was that Pakistan has been very cooperative in America's anti-India moves in Kashmir, Punjab, Naxalites, North East, but when it comes to their other objectives, Pakistan showed its helplessness. This has been going on for three decades now but US refuses to recognize that.
US can't do anything to Pakistan, militarily, or economically.
