Comment by hedora

"Non-domestic purposes" specifically includes wiretapping US citizens and residents, and has for at least 25 years:

https://en.wikipedia.org/wiki/NSA_warrantless_surveillance_(...

I suspect the 2007 in the title refers to the fact that bills were passed to ban this stuff in 2007, which is when the PRISM program (also illegal domestic surveillance) got started.

(The title makes it sound like warrantless surveillance lasted from 2001-2007, but I think it means the article only covers that date range.)