The President has put a balanced, reasonable proposal on the table that achieves significant deficit reduction and reflects real compromise by meeting the Republicans halfway on revenue and more than halfway on spending from where each side started. That is the essence of compromise. The parameters of a deal are clear, and the President is willing to continue to work with Republicans to reach a bipartisan solution that averts the fiscal cliff, protects the middle class, helps the economy, and puts our nation on a fiscally sustainable path. But he is not willing to accept a deal that doesn't ask enough of the very wealthiest in taxes and instead shifts the burden to the middle class and seniors. The Speaker's "Plan B" approach doesn't meet this test because it can't pass the Senate and therefore will not protect middle class families, and does little to address our fiscal challenges with zero spending cuts. The President is hopeful that both sides can work out remaining differences and reach a solution so we don't miss the opportunity in front of us today.
Barack Obama, Statement by Press Secretary Jay Carney on "Fiscal Cliff" Negotiations Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/303210