Special counsel Robert Mueller has doubled down in his effort to ask President Donald Trump about potential obstruction of justice, according to White House sources cited Wednesday by ABC News. This comes a week after Trump’s lawyer, Rudy Giuliani, said that the president would agree to an interview if he was only asked about collusion between his campaign and Russia in the 2016 elections. The sources report that Trump learned about Mueller’s response within the last day, and suggest that this may have been the impetus for this morning’s tweet storm, in which the president took new aim at the “Rigged Witch Hunt” and once again called on Sessions to shutter the investigation. ABC notes that the deliberation over Mueller’s permitted lines of questioning has persisted for months, as his team and Trump’s ever-changing counsel have debated acceptable topics. Giuliani confirmed Wednesday that his team had received Mueller’s response, and that they were preparing their counter-proposal.