By Bob Brigham The House Committee on Oversight and Reform has begun receiving documents from Mazars USA, which was Donald Trump’s longtime accounting firm before it severed ties. “After a yearslong legal fight, the House Oversight Committee has received a first trove of documents from the firm, which recently entered into a legal settlement agreeing to produce a range of financial documents from several years before Mr. Trump took office and during his early presidency. Mazars said in February it could no longer stand behind a decade of annual financial statements it had prepared for the Trum…