1) Snowden said these programs have gotten dramatically worse under Obama. He has said that numerous times.
2) Prior to Obama's election, it didn't have all the tech companies lined up into XKeyscore. That was put into place on his watch.
3) The NSA also was not yet illegally tapping into and stealing bulk data from these companies via interception, to get around collection restraints.
4) The NSA's massive Utah data center was built during his Administration.
5) In 2009 Obama's DOJ admitted to illegal surveillance abuses, and claimed steps had been taken to correct such. They lied of course, they did the exact opposite: they massively expanded surveillance.
http://www.nytimes.com/2009/04/16/us/16nsa.html
6) The U.S. Marshals Service overflight program came into existence during Obama's Administration. The service was initiated in 2007, and the flight program was put into place by the Obama Administration. Worth noting: he also didn't stop it, he expanded the program.
7) The NSA began actively helping other agencies illegally (eg the DEA), via parallel construction, during Obama's Administration. This practice has massively expanded under Obama's watch.
9) Obama also loves to use the Espionage Act to persecute journalists that act to reveal the dirt of his Administration.
10) The Obama Administration continued to lie about the programs. The Obama Administration continued to refuse to admit their existence. The Obama Administration massively expanded all surveillance programs. This is all continuing right now.
11) During Obama's watch, the Stingray device has gone from being a piece of military technology, to being handed down from the Federal level to the local and state level. During his Administration, efforts have been made to expand illegal surveillance from the domain of the Federal Government, and to ensure widespread surveillance at all levels, so the Feds have a greater total access to communications.
There has never been a more abusive surveillance President in US history. And there are another easy dozen items on this list, of abuses by the Obama Presidency when it comes to surveillance.