During the Cold War India was more socialist-leaning and in the USSR's camp, so the USA wooed Pakistan as a hedge against the possibility that India and the USSR might combine to oppose the West. Then in the '80s we strengthened our Pakistani ties as a buffer against the USSR gaining a warm water port when they invaded Afghanistan. And now we need their assistance in tracking down and fighting terrorists in Afghanistan.
Since Pakistan has zero fear that India will launch a major unprovoked attack, we need them a lot more than they need us. Therefore we put no pressure on them about much of anything. And the one time we really broke that rule - pressuring Musharriff to step down - didn't really turn out too well for us. Although I suppose it was a necessary step given that we were establishing democracies in Iraq and Afghanistan.
By strengthening pakistani ties, you mean creating the hydra that we now call al qaeda. Yup good going. put down another 11 billion dollars into jihadistan and you will get a nice mushroom cloud in one of your cities. They take your money and are right now scheming how to cut the heads off or kill more infidels. They have been milking your country for about 30 years now and the ISI and pak army has the US by its balls.
I do find hilarious the moral posturing by the US.