The Senate seems to be debating Obamacare repeal, a highway bill, reviving the expired Export-Import Bank, something about Iran and Israel, and cutting off subsidies to abortion-industry leader Planned Parenthood — all at the same time. What's going on here?

Here's the story, boiled down to its essential elements:

1. The bill in question is the highway bill

The federal Highway Trust Fund runs out of money Friday. President Obama, the road-building industry and much of the business world want a 6-year extension, but nobody can agree about how to fund it (whose taxes to hike). So the House has passed a four-month extension of funding for the highway bill, pushing a fight over revenues until after the August recess.

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