They need to send their network and security code to NSA for inspection, they look at it and MODIFY, they don't know in some cases what does the modification does.

It has been that way from 1995 days(I had family members working in MS at that time).It's normal, they are a US company after all.

I'm too lazy for citation, just search by yourself, here you can look at the "there are good contributions from NSA" probe: http://www.washingtonpost.com/wp-dyn/content/article/2007/01...

You know, we "can be all terrorist" mentality, like the printers mark, they need some way of accessing any computer just in case.

It's probably a reference to http://en.wikipedia.org/wiki/NSAKEY