Donald Trump talks to the press at Trump International Hotel...

Donald Trump talks to the press at Trump International Hotel & Tower New York after receiving the American Automobile Association's (AAA) Five-Diamond Award for the hotel. (March 31, 2011) Credit: Getty Images

If he doesn't watch his mouth, Donald Trump may one day hear his own catchphrase.

While NBC's chairman Bob Greenblatt told members of the Television Critics Association that he stands by the outspoken "Apprentice" host, he also warned Sunday that action could be taken if the business magnate goes too far, Deadline.com reported.

"If he becomes somehow hurtful and says or does things that cross a line, we would figure out what to do with that," Greenblatt said of Trump, who has regularly appeared on news shows with off-the-wall slams at the president.

Greenblatt joked that his network already kept Trump on a short leash.

"We talked him out of running for president, wasn't that good enough?" he asked.

Newsday Live and Long Island LitFest present a conversation with the former senior advisor to President Clinton and co-anchor of “Good Morning America,” George Stephanopoulos, about his new book, “The Situation Room, The Inside Story of Presidents in Crisis.” Host: NewsdayTV Anchor Jasmine Anderson

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Newsday Live and Long Island LitFest present a conversation with the former senior advisor to President Clinton and co-anchor of “Good Morning America,” George Stephanopoulos, about his new book, “The Situation Room, The Inside Story of Presidents in Crisis.” Host: NewsdayTV Anchor Jasmine Anderson

Newsday Live: A Chat with George Stephanopoulos Newsday Live and Long Island LitFest present a conversation with the former senior advisor to President Clinton and co-anchor of "Good Morning America."

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