Yes, US used to be a great country but it is in a free fall. While CIA was funding Pakistan based Jaehadis to kill Indians in Kashmir and Punjab, there were three very important developments taking place which will prove fatal to US as super power
1. Rise of Euro as a currency. 2. Rise of China as manufacturing giant and China's policy to make friendship with Japan and Taiwan thus trying to prevent USA from fishing in troubled water 3. Unity of Islamic countires under OIC. They knew they could win directly against USA, so they also started to use deception while dealing with US.
US will be facing tough times for the next decade and if it ever recovers, it would be a miracle. US leadership is shortsighted, its state department babus are worse than our North block Babus and ill informed. US has no flexibility in policy--like a senile person.
India should strike a very hard bargain for any deal, US would give in. India is the only country which is still sympathetic to USA but this nuclear deal may turn away Indians from that position.