Presumptive Republican presidential nominee Donald Trump, who has touted his ability to self-fund most of his campaign, named a hedge fund veteran on Thursday as finance chairman for his general election bid. Steven Mnuchin, chairman and CEO of Dune Capital Management, said in a statement he will help Trump "create a world-class finance organization" to fuel his campaign. Mnuchin previously was chairman of OneWest Bank Group and was a partner at Goldman Sachs. "Steven is a professional at the highest level with an extensive and very successful financial background. He brings unprecedented experience and expertise to a fundraising operation that will benefit the Republican Party and ultimately defeat Hillary Clinton," Trump said in a statement.

US Republican presidential candidate Donald Trump Jewel Samad | AFP | Getty Images

The billionaire businessman repeatedly touted his ability to self-fund his GOP primary campaign. While his campaign committee had taken in about $12 million in donations by the end of March, Trump himself had loaned it about $36 million. The creation of a larger finance organization is necessary for a general election effort. However, it raises questions about Trump's assertions that he does not need donor money and therefore is not beholden to any special interests, a point of appeal for some voters.