First impressions are hard to erase, and the obstinacy that made Ms. Ocasio-Cortez an instant national celebrity remains at the heart of her detractors’ most enduring critique: that she is a performer, out for herself, with a reach that exceeds her grasp.

Representative Alexandria Ocasio-Cortez scrutinized fellow Democrat over a Bernie Sanders post about the foreign aid bill.

"He and many other Jewish leaders deserve better than to be treated this way," the New York Democrat said of Rep. Jared Moskowitz's remarks.