After Edward Snowden leaked classified documents that exposed the extent of the National Security Agency's data collection, the NSA repealed the act that made it possible to mass collect phone metadata.
Trump, though, would "err on the side of security" and has said that he supports the NSA's ability to hold bulk data.
"When you have the world looking at us and would like to destroy us as quickly as possible, I err on the side of security, and so that’s the way it is, that’s the way I’ve been, and some people like that, frankly, and some people don’t like that," Trump said in an interview on the Hugh Hewitt show. "I assume when I pick up my telephone people are listening to my conversations anyway, if you want to know the truth. It’s pretty sad commentary, but I err on the side of security."