President Trump criticized Rep. Al Green (D-Texas) for his behavior during Trump's joint address, suggesting that Green should take an IQ test and be censured for his actions. The House voted to censure Green for his disruptive protest during the address, with Trump calling him a "fool and a clown." Green stood up, waved his cane, and yelled back at the president, prompting his removal from the chamber. Trump labeled Green an embarrassment and criticized Democrats for their response to his speech.
Source: https://thehill.com/homenews/administration/5180164-trump-al-green-iq-test/