Trump admin live updates: White House drops NASA nominee with Musk ties

Kevin Hassett, from the White House National Economic Council, continued to promote the administration's trade deals and responded to a court ruling that blocks some of President Donald Trump's global tariffs during an interview with FOX Business Network's "Mornings with Maria" on Thursday.

Hassett said the administration was "confident" it would win on appeal, contending fentanyl crossing the border from Mexico, Canada and China amount to an "emergency."

Hassett mentioned that the Trump administration has "three or four other ways to do it" regarding tariffs as they move forward, but still projected optimism they would prevail in court.

"There are different approaches that would take a couple of months to put these in place and using procedures that have been approved in the past or approved in the last administration, but we're not planning to pursue those right now because we're very, very confident that this really is incorrect," Hassett said.

-ABC News' Kelsey Walsh

An hour ahead of a federal hearing on Thursday over Harvard's ability to enroll international students, the acting director of the U.S. Immigration and Customs Enforcement issued a letter formally notifying the school that its Student and Exchange Visitor Program certification would be withdrawn.

The formal notice -- which provides Harvard University 30 days to respond -- said the Department of Homeland Security identified "national security concerns" related to international students and accused them of allowing antisemitism on campus.

"During a records review of Harvard University, compliance issues were identified that may result in the withdrawal of your school's certification and bar any further enrollment or education of nonimmigrant students," the notice said.

With a federal judge set to evaluate the legality of the Trump administration's actions last week revoking the school's ability to enroll international students, sources have described the letter as an effort to provide a legal justification for last week's purported revocation.

-ABC News' Peter Charalambous

The Trump administration will work to "aggressively revoke visas" for Chinese students at U.S. universities, including those with ties to the Chinese Communist Party or studying in "critical fields," Secretary of State Marco Rubio said in a statement Wednesday.

Rubio's statement said the State Department and the Department of Homeland Security would work on revoking visas.

"We will also revise visa criteria to enhance scrutiny of all future visa applications from the People’s Republic of China and Hong Kong," Rubio said.

The move is in step with the Trump administration's ongoing crackdown on student visas.

-ABC News' Shannon Kingston

A federal judge in Boston has ordered President Donald Trump's administration to resume processing immigration benefits for migrants paroled under several humanitarian parole programs that the Department of Homeland Security attempted to halt.

Judge Indira Talwani's decision is the latest ruling in a wide-ranging lawsuit that is challenging the Trump administration’s decision to halt processing applications from migrants who are already under these programs or are hoping to be.

It essentially means that beneficiaries of: Uniting for Ukraine, Operation Allies Welcome (Afghanistan), Central American Minors Parole, Family Reunification Parole, Military Parole-in-Place, and CHNV (Cubans, Haitians, Nicaraguans, Venezuelans) can continue applying for other types of relief.

Judge Talwani also ordered the administration to accept initial and re-parole applications for people under the Military Parole in Place Program (MPIP). That program allows some current and former members of the military and their relatives to apply for parole if they lack legal status.

-ABC News' Armando Tonatiuh Torres-García