House Speaker Nancy Pelosi, responding to Republican criticism of closed-door meetings on healthcare legislation, said that she would strive for transparency as Democrats began their final push for a bill. President Barack Obama met with top House and Senate Democrats and urged them to move quickly in blending the healthcare bills passed by each chamber late last year. White House staff plan to meet as soon as Wednesday with House and Senate staff to begin discussin key differences, and House leaders plan to return to the White House Wednesday, the Wall Street Journal reports.