At a speech in Pennsylvania Saturday, Trump said he opposed the deal before it had even been officially announced.

“AT&T is buying Time Warner, and thus CNN, a deal we will not approve in my administration because it’s too much concentration of power in the hands of too few,” Trump said, calling the deal “an example of the power structure I’m fighting.”

He also said he would not have approved Comcast’s 2011 takeover of NBC/Universal, which was the biggest merger between a media distributor and producer so far. (NBCUniversal is an investor in BuzzFeed).

In a statement Sunday, the Trump campaign said he will take aggressive action against media conglomerates like Time Warner, owner of “the wildly anti-Trump CNN,” complaining that they “intrude into our personal lives, and in this election, are attempting to unduly influence America’s political process.”