On Capitol Hill, no one likes a staffer who oversteps their authority by attacking fellow lawmakers, and that’s exactly where Rep. Alexandria Ocasio-Cortez’s chief of staff put himself with an incendiary tweet aimed at Democrats and House Speaker Nancy Pelosi.

Saikat Chakrabarti, 33, a powerful influence behind the 29-year-old first-term congresswoman, angered dozens of moderate House Democrats last month during an intra-party battle over border funding.