U.S. President Donald Trump and his allies in the Senate face a political free-for-all over passage of his sweeping tax-cut and spending legislation, which Republican congressional leaders hope to enact in coming days despite growing resistance from different party factions.

While the two bills are similar on the major tax provisions, how they work out their differences in the coming weeks will determine how quickly they can get a final product over the finish line. President Donald Trump is pushing to have the legislation on his desk by July 4th.

President Donald Trump’s tax-and-spending agenda is nearing a climactic vote in the Senate this week in the wake of air strikes on Iran, which risk embroiling the US in a prolonged Middle East conflict.