Trump 2nd term updates: Trump attends the Super Bowl

The American Cancer Society on Thursday called for President Donald Trump's administration to “restore access to comprehensive data, refrain from changes that would lead to incomplete future data collection and commit to ensure evidence-based science can proceed without additional bureaucracy or red tape,” in a statement from the advocacy group’s interim CEO, Dr. Wayne A. I. Frederick.

The statement comes as some government data sets and webpages have been removed or altered on federal health agency websites.

It notes that disruptions or changes to any government data collection and availability “could compromise understanding of disease burden, emerging trends, and effective interventions.” It further adds that restrictions to gathering and releasing data from federal health agencies could “thwart our ability to address and reduce the cancer burden across all communities.”

-ABC News' Soo Rin Kim, Peter Charalambous, Olivia Rubin

The Federal Bureau of Prisons will hold detainees arrested by Immigration and Customs Enforcement, sources told ABC News.

At least two federal facilities -- in Los Angeles and Miami -- have begun to hold ICE detainees, sources said.

-ABC News' Luke Barr

Longtime Democratic Federal Election Commissioner and Chair Ellen Weintraub on Thursday said President Donald Trump sent a letter removing her from the commission -- a move that election experts say is unlawful.

In a social media post accompanied by a copy of the short letter signed by Trump, Weintraub wrote: "Received a letter from POTUS today purporting to remove me as Commissioner & Chair of @FEC. There’s a legal way to replace FEC commissioners-this isn’t it."

"I’ve been lucky to serve the American people & stir up some good trouble along the way. That’s not changing anytime soon," she continued.

The letter from Trump reads: "Dear Commissioner Weintraub, You are hereby removed as a Member of the Federal Election Commission effective immediately. Thank you for your service on the Commission."

Several election experts have already echoed Weintraub's claim that Trump's unprecedented move is potentially unlawful.

“In claiming to fire a commissioner of the Federal Election Commission, the president violates the law, the separation of powers, and generations of Supreme Court precedent," wrote Trevor Potter, Republican former chair of the FEC and president of Campaign Legal Center, stressing the importance of maintaining the independent nature of the FEC.

Trump’s dismissal of Weintraub comes as other former government officials begin to challenge the president’s single-handed effort to reshape the leadership within the federal government.

-ABC News' Soo Rin Kim, Peter Charalambous, Olivia Rubin

Less than 12 hours after a federal judge in Seattle issued a nationwide injunction blocking President Donald Trump’s executive order on birthright citizenship, the Department of Justice filed paperwork signaling its intent to appeal the order to a higher court.

Lawyers with the DOJ filed a notice of appeal in the Western District of Washington, fulfilling Trump’s vow to challenge the order.

"Obviously, we will appeal it," Trump said in the Oval Office last month. "There's no surprises with that judge."

The filing puts the Trump administration on track to bring the case to the Ninth Circuit Court of Appeals, the country’s largest federal appellate court spanning from Arizona to Washington.

The Ninth Circuit has a reputation as a bastion of liberal jurisprudence – frequently blocking the policies of Republican presidents – that Trump attempted to reshape during his first term by adding 10 conservative judges to the San Francisco-based court.

-ABC News' Laura Romero and Peter Charalambous