Even by the standards of President Donald Trump and billionaire Elon Musk's relationship, it's been an unusual week.

Disputes among Republicans about parts of Trump's major tax bill threaten approval in the Senate and past compromises reached by the GOP-led House.

House Republicans responded to the public feud between President Trump and Elon Musk over a spending bill that Musk called a "disgusting abomination." ...

When interest payments reached a similar share of federal revenue back in the early 1990s, it helped break up the Reagan ...

From centrists worried about Medicaid cuts to conservative hard-liners demanding steeper spending reductions, Senate GOP ...