Janet Yellen (L) and Donald Trump (R).

Speaking at a news conference in New York City Tuesday, Republican presidential candidate Donald Trump said Federal Reserve chair Janet Yellen kept interest rates low in order to help President Obama.

"They are not raising them because Obama has asked them not to raise them," said the billionaire developer. "In my opinion he wants to get out of office because we are in a bubble and when those rates are raised, a lot of bad things are gonna happen."