A former campaign adviser to President Trump said the ongoing federal probe into alleged ties between the Trump campaign and Russia has taken such a financial toll on him that he's had to liquidate his children's college fund to pay for legal counsel.

"It's very expensive and nobody's called me and offered to help," Michael Caputo, who worked in the Trump campaign’s communications department, told The Washington Examiner.

"The problem is, it's very specialized representation, so it takes a certain type of attorney, and they're quite competent. And you'll pay for competency," he continued. Caputo said he has hired a New York-based attorney.

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The former campaign adviser said the probe was politically motivated, and aimed at "destroying" the president's allies.

Caputo went on to tell the publication he has received death threats, which has also contributed to the financial strain.

"We've had to install security. I've had to take security precautions at both my home and at my office, and with my children, so these all add up very quickly," he said.

Caputo's comments come as Special Counsel Robert Mueller expands the scope of the probe into the matter, zeroing in on social media's connection to Russian meddling and Trump's financial ties.

Despite grievances from former Trump associates like Caputo, lawmakers appear intent on protecting Mueller and his investigation.

The Senate Judiciary Committee is planning hearings for two pieces of bipartisan legislation that would protect Mueller from being fired by Trump.