The real problem is the technology that has been placed in the hands of the NSA plus what you point out, the power of a president.
We need to repeal the Patriot Act and the FISA act, which are the sources of this power.
I don’t care if it’s President Bush, President Obama, President Trump, the next president, or the one after that. NO President should have such powers.
That is not to minimize what Obama apparently did. But we need to pull this up by the roots rather than focusing completely on just one individual president.