During Congressional testimony, Transocean and BP blamed each other for the disaster. It emerged that a "heated argument" broke out on the platform 11 hours before the accident, in which Transocean and BP personnel disagreed on an engineering decision related to the closing of the well. On 14 May 2010, US President Barack Obama commented, "I did not appreciate what I considered to be a ridiculous spectacle… executives of BP and Transocean and Halliburton firm responsible for cementing the well falling over each other to point the finger of blame at somebody else. The American people could not have been impressed with that display, and I certainly wasn't."