[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2010/images/02/25/obama.0310.jpg caption="President Obama is hoping to sell Democrats and even Republicans on his health care plan."]Washington (CNN) - President Obama worked behind closed doors to win support among key House Democrats for his health care reform plan Thursday, one day after urging Congress to hold a final up or down vote on the measure.
The administration also ratcheted up its campaign against private health insurance companies, summoning a group of CEOs to the White House and asking them to justify recent rate increases.
Senior Democrats, meanwhile, continued to give optimistic predictions about the fate of the president's top domestic priority. House Speaker Nancy Pelosi said Congress is "on the brink of making very important history."
White House Press Secretary Robert Gibbs said he thinks the House of Representatives is on schedule to pass the Senate health care bill before Obama leaves for an overseas trip March 18.