The announcement comes as the Conservative Government has been accused of misusing public money in Government Facebook ads targeting marginal constituencies which were launched on the day Boris Johnson got the election he has repeatedly claimed he did not want to hold.
The first televised election debate between Boris Johnson and Jeremy Corbyn has been set for November 19.
Labour said the Tories owed the communities whose wishes had been ignored an apology, and the public "an explanation of how much public money they wasted while ignoring the science."
'We know Facebook was used as a political weapon by Johnson, Cummings and Gove in the Vote Leave illegal campaign'
The US President also explained that Boris Johnson’s Brexit deal would prevent the UK negotiating better trade deals outside the EU.
His pledge comes on "DieInADitchDay", which commemorates his previous pledge.
The House of Commons is set lose over 750 years of parliamentary experience in the upcoming election. We pay tribute to those standing down.
Nigel Farage, Ann Widdecombe and other party figures had been denouncing the Conservative Government’s Withdrawal Deal in scathing terms.
In his first major stump speech of the countdown to the pre-election poll on December 12, Corbyn will hit out at the “tax dodgers, bad bosses, big polluters, and billionaire-owned media holding our country back”.