President Obama will deliver remarks on the 'fiscal cliff' talks Monday at 1:30 p.m. E.T., as negotiators for the administration and Senate Minority Leader Mitch McConnell (R-Ky.) appeared to have nailed down many of the most critical tax issues, including a plan to let taxes rise on income over $450,000 a year for couples and $400,000 a year for individuals, according to people in both parties familiar with the talks. /Washington Post