On the eve of his fourth prime-time news conference, President Obama was working the phones, calling lawmakers involved in the health care talks to push them to embrace reform, White House Communications Director Anita Dunn said Wednesday. It follows the president’s Tuesday meeting with Democrats at the White House, dubbed a “serious working session” where “major progress” was made, Dunn said. Senior administration officials said the president will not meet with lawmakers Wednesday but was temporarily shifting focus to the discussions with visiting Iraqi Prime Minister Nuri al Maliki, the joint news conference with him, and then the prime-time news conference Wednesday