Senate Republicans can afford to lose no more than three of their own votes on the bill, but two already are opposed and others remained undecided.

At some 940-pages, the legislation is a sprawling collection of tax breaks, spending cuts and other Republican priorities, including new money for national defense and deportations.

NBC News Senior National Political Reporter Sahil Kapur and Chief Justice and National Affairs Correspondent Kelly O’Donnell join Meet the Press NOW with the latest on President Trump's agenda before Congress as the Senate considers changes before its final vote.