House Speaker Nancy Pelosi told her members Friday to brace themselves for a climatic health care vote as early as next week, warning them to clear their schedules for next weekend and promising to stay in session until the landmark vote, people present at the meeting told POLITICO. President Barack Obama has postponed an overseas trip until March 21, and Pelosi said, "I am delighted the president will be here for the passage of the bill. It will be historic."