Judy Woodruff:

The debate and the battles over the federal health care law titled the Affordable Care Act, but often referred to as Obamacare, have been a constant since it was enacted eight years ago.

But, this weekend, a new round was fired in the battle that threatens the very future of the law itself. A federal judge in Texas ruled Friday night that the entire law is unconstitutional.

And, as Amna Nawaz explains, by doing so, the judge has triggered a flood of questions about what happens now.