Presidential candidate and business mogul Donald Trump is apparently a not very likeable politician after he was booed on Tuesday during the U.S. Open quarterfinals in New York.

CNN said Trump received the rude treatment from the audience when he entered the stadium with wife Melania during the game between Serena Williams and sister Venus.

Though he was repeatedly booed by the crowd, Hollywood Life said he kept his cool and continued walking to his seat.

"It seems like Donald couldn't catch a break later on either, because when he was shown on screen during the match, he was met with even more boos," added the same report.

During the quarterfinals match, BBC reported that Serena outclassed her sister with a 6-2 1-6 6-3 win. She is scheduled to play versus Italy's Roberta Vinci this Thursday.

"She's the toughest player I've ever played in my life and the best person. It's going against your best friend and the greatest competitor, for me, in women's tennis, so it was really difficult for me today," Serena said of her older sister in the BBC report.

As for Venus, she said she is still happy for her sister despite the loss.

"Losing isn't fun, but probably the most gratifying part is I'm still very excited to see Serena have an opportunity to win the four majors," the older Williams added.

With this U.S. Open scenario, Trump seemed to have gotten used to this kind of treatment as he was also booed during the Republican Presidential Debate last Aug 6. This was the event where he refused to support a Republican president nominee, aside from him.

But with his campaign, the business mogul remains focused on his plans for the U.S.

In an interview with the Daily Caller, Trump shared his plans on what to do with the Iran deal when he becomes the leader of the country.

"I think this deal with Iran is perhaps the greatest disaster of a contract that I've ever seen. It's the most incompetently drawn and agreed to contract that I've ever seen. It is the most one-sided. It's a disgrace to the U.S. and I think it'll be a disgrace to humanity," he added.

He also revealed that the deal will be a signed contract.

"I would police that contract -- you know, I've taken over plenty of bad contracts where I've bought things where deals have gone bad because the people doing it didn't know what they were doing. I've made a lot of money by dealing with people that didn't know what they were doing, like the president," explained Trump.

The politician also vowed that he would carefully study and scrutinize the contract and find out if there were any violations made.