By Arthur Kane The Center Square Spending in U.S. senators' office accounts spiked by 43% since 2020, with big jumps in 2022 and the last fiscal year for senators to pay their staff, travel and other expenses, an investigation by The Center Square found. In 2020, the U.S. Senate office account was spending less than half a billion dollars, but that has since increased by nearly $200 million, an analysis of data provided by the American Governance Institute and other online data shows.