The Celebrity Apprentice star has recently expressed doubts as to whether Obama was born in the US and charged that the country is "going to hell" under the president's leadership.
In an interview with Extra, Trump suggested that he faces more serious opposition from other potential Republican candidates.
"Look, the country is a laughing stock for the rest of the world. I say [Obama] can be beaten easily," the mogul claimed. "I actually think getting the nomination will be more difficult than beating the President."
The star further quipped that he is confident Obama can be unseated because the politician is not taken seriously around the globe.
He added: "We are abused by other countries throughout the world and I really think it's time [to put a stop to that]. When [Obama spoke] about change [during the 2008 campaign] - the change was not for the better, it was for the worse."
Earlier this week, Obama officially announced that he plans to run for a second term of office as US President.
The Celebrity Apprentice airs Sundays on NBC.
Watch Donald Trump detail his election strategy below: