Businesses controlled by a major financial supporter of President Donald Trump have seen a huge growth in payouts from the United States Postal Service (USPS) during the Trump administration, a TMI review has found.

In 2018, an Iowa limited liability company owned by trucking magnate Wayne Hoovestol donated $250,000 to America First Action, a pro-Trump super PAC sanctioned by the White House. Later that year, the same company — DRT, LLC — gave $10,000 to the Senate Leadership Fund, a super PAC that has been chaired by Trump’s USPS board chair, Mike Duncan, shortly after Duncan joined the agency’s board.

Hoovestol’s companies, which include Eagle Express Lines, saw $453 million in revenue from the Postal Service in fiscal year 2019, up from $317 million in the 2016 fiscal year, according to Bloomberg Government contract data analyzed by TMI.