Absolutely not, the US might have the left overs from its Golden Age, in other words its education system. This is what attracts foreign students, however these students are once again retaining their links back to their country, they might study in the US but many return to their home countries. I'll make an example of Pranav Mistry, he graduated from IIT Mumbai, went to MIT in the US, his SixthSense technology is going to give a net benefit to India.
The guys in NASA, LM etc are from the previous generation. Look at your schools, your toppers are foreigners.
I'm not saying US hegemony in the scientific fields will disappear before atleast 2025-30 but it is swiftly on the decline, a lack of homegrown talent is going to be a killer. It would be foolish to think India/Europe/China/Russia cannot come up with technology that is superior to the US.
All I managed to perceive from your post was that you agree with faithfulguy, the rest was incomprehensible.
Anyway: If I had a choice between Communist China and Democratic America, I would choose America. However your country is stagnating, people are no longer trying to improve their lot, your public education is a joke. I was talking to an old friend from India who went to the US on Facebook, he's doing a Mathematics course in college and the work there is barely up to the level of work I did in AUSTRALIA in HIGH SCHOOL. The culture of education is disappearing and is going strong in other countries. The only difference is you have the money to fund what you have, whereas it is only recently other countries are being able to do the same.