Updated at 4:50 p.m. ET

Attorney General Jeff Sessions says he will stay at his post for "as long as that is appropriate." That follows comments by President Trump, who said he wouldn't have appointed Sessions had he known Sessions would recuse himself from the investigation into possible collusion between the Trump campaign and Russia.

Arizona Sen. John McCain has been diagnosed with brain cancer, the Mayo Clinic Hospital in Phoenix says. McCain, 80, underwent surgery for a blood clot on July 14.

The hospital says testing revealed that a tumor "known as a glioblastoma was associated with the blood clot."

"The Senator and his family are reviewing further treatment options with his Mayo Clinic care team. Treatment options may include a combination of chemotherapy and radiation," the hospital statement said.

The forecast from the Congressional Budget Office on Senate Republicans' latest health care strategy isn't great — but it's no surprise either.

The CBO estimates that legislation that repeals key pillars of the Affordable Care Act (aka "Obamacare") would trim $473 billion off the federal deficit, but result in 32 million fewer insured Americans in the next decade. It would also see premiums rise, and likely force private insurers to abandon the individual market.

And nearly every Republican has already voted for it.

The Supreme Court has upheld parts of a lower court order that had widened the definition of which citizens from the six Muslim-majority countries covered by the Trump administration's travel ban are still eligible to travel to the U.S.

The order issued Wednesday leaves in place the action of a U.S. District Court judge in Hawaii who broadened the definition of close family to include categories such as the grandparents and cousins of a person in the U.S.