Several Senate moderates who supported the measure have threatened to withhold their support from the final bill if it comes back from conference with the House with substantial differences. The House health reform measure passed by a narrow 220 to 215 margin, with dozens of conservative Democrats threatening to withhold their support if the conference report weakens language restricting federal funding for abortions. But White House Press Secretary Robert Gibbs said “Health care reform is not a matter of if. Health care reform now is a matter of when.”