This part in particular should be of great interest to UFCW and other union members who are furious (and rightly so) at the unfair so-called "Cadillac plan" tax in the Senate bill:
Funding: This may be the stickiest difference between the two bills. The House version raises a substantial chunk of the needed revenue by imposing a 5.4 percent surtax on incomes over $500,000, or $1 million for couples. Meanwhile, the Senate bill raises revenue through an excise tax on "Cadillac plans." Many wonks believe the tax will put downward pressure on spending by making these expensive plans less appealing, but there's still concern that the tax could hit many middle-class people. The conference could just split the difference, implementing versions of both taxes.h/t Ezra Klein.