Democratic sources say Republicans could use Senate votes to slow final version . Congressional Republicans have to merge an $ 871 billion Senate bill and $ 1 billion House bill . Individuals with annual incomes over $ 500,000 -- as well as families earning more than $ 1 million -- would face a 5.4 percent income tax surcharge . Many observers believe final version will look more like conservative House bill . Financing , public option are key sticking points between House , Senate versions .
Democratic sources say Republicans could use Senate votes to slow final version . Congressional Republicans have to merge an $ 871 billion Senate bill and $ 1 billion House bill . Many observers believe final version will look more like conservative House bill . Financing , public option are key sticking points between House , Senate versions .