It has become routine for Donald Trump to give his thoughts on social media, especially as he continues his war with the news media. As he has in the past, Trump is back on Twitter and there's a few topics he's not happy about.

Trump on Twitter

In recent days, there have been two issues that have dominated the news cycle in regards to Donald Trump. One has been his obsession with the conspiracy theory that as many as five million illegal immigrants voted against him on Election Day, which he believes cost him the popular vote to Hillary Clinton. In addition, after the new president signed an executive order calling for the construction of a border wall, Mexico announced that they would not be held financially responsible, which led to the planned meeting between both sides to be canceled.

As seen on his offical Twitter feed on January 27, Trump is lashing out.

"Look forward to seeing final results of VoteStand. Gregg Phillips and crew say at least 3,000,000 votes were illegal," Donald Trump wrote on Twitter Friday morning, before adding, "We must do better!" Phillips is the head of a right-wing organization that claims to be a voter fraud report group. Just a week after the election, Phillips reported that at least three million votes were cast illegally, but has never provided evidence to back up his allegations.

Trump on Mexico

"Mexico has taken advantage of the U.S. for long enough," Donald Trump sent out in a follow-up post on Twitter, while also noting, "Massive trade deficits & little help on the very weak border must change, NOW!" Trump has long talked tough when it comes to Mexico, referring to illegal immigrants from the country as "rapists" and "murderers" during his campaign announcement in June 2015.

While the aforementioned planned meeting between Donald Trump and Mexican President Enrique Pena Nieto has been put on hold, it's unknown if the two sides will be able to reach common ground anytime soon.

Despite the friction, the former host of "The Apprentice" has vowed that Mexico will repay the United States for the border wall, possibly through an import tax, but will ask the American taxpayer to front the money.