On 8 August 1792, ill at ease and shocked by the course of events, Vaublanc delivered a speech before the Assembly, in which he defended, vigorously, and courageously, against the lively opposition of the Jacobins who dominated the Assembly and of the man in the street, General La Fayette, who stood accused of violating the Constitution. He later claimed to have succeeded (with the help of Quatremère de Quincy) in rallying 200 undecided deputies to his position. La Fayette was acquitted, by 406 votes out of 630.