Palmerston's grip on the premiership was weakened by his response to the Orsini affair, in which an attempt was made to assassinate the French Emperor Napoleon III by an Italian revolutionary with a bomb made in Birmingham. At the request of the French ambassador, Palmerston put forward amendments to the conspiracy to murder statute, proposing to make creating an infernal device a felony rather than a misdemeanour. He was defeated by 19 votes on the second reading, with many Liberals crossing the aisle against him. He immediately resigned, and Lord Derby returned to office.