Workers at seven Amazon facilities went on strike Thursday, an effort by the Teamsters to pressure the e-commerce company for a labor agreement during a key shopping period.

The Teamsters say the workers, who authorized strikes in the past few days, are joining the picket line after Amazon ignored a Sunday deadline the union set for contract negotiations. Amazon says it doesn’t expect an impact on its operations during what the union calls the largest strike against the company in U.S. history.

The International Brotherhood of Teamsters say they represent nearly 10,000 workers at 10 Amazon facilities, a small portion of the 1.5 million people Amazon employs in its warehouses and corporate offices.

At one warehouse, located in New York City’s Staten Island borough, thousands of workers who voted for the Amazon Labor Union in 2022 and have since affiliated with the Teamsters. At the other facilities, employees - including many delivery drivers - have unionized with them by demonstrating majority support but without holding government-administered elections.

The strikes happening Thursday are taking place at one Amazon warehouse in San Francisco, California, and six delivery stations in southern California, New York City; Atlanta, Georgia, and Skokie, Illinois, according to the union’s announcement. Amazon workers at the other facilities are “prepared to join,” the union said.

“Amazon is pushing its workers closer to the picket line by failing to show them the respect they have earned,” Teamsters General President Sean M. O’Brien said in a statement.

The Seattle-based online retailer has been seeking to re-do the election that led to the union victory at the warehouse on Staten Island, which the Teamsters now represent. In the process, the company has filed a lawsuit challenging the constitutionality of the National Labor Relations Board.

TikTok on Monday asked the Supreme Court to step in on an emergency basis to block the federal law that would ban the popular platform in the United States unless its China-based parent company agreed to sell it.

Lawyers for the company and China-based ByteDance urged the justices to step in before the law’s Jan. 19 deadline. A similar plea was filed by content creators who rely on the platform for income and some of TikTok’s more than 170 million users in the U.S.

“A modest delay in enforcing the Act will create breathing room for this Court to conduct an orderly review and the new Administration to evaluate this matter — before this vital channel for Americans to communicate with their fellow citizens and the world is closed,” lawyers for the companies told the Supreme Court.

President-elect Donald Trump, who once supported a ban but then pledged during the campaign to “save TikTok,” said his administration would take a look at the situation.

“As you know, I have a warm spot in my heart for TikTok,” Trump said during a news conference at his Mar-a-Lago club in Florida. His campaign saw the platform as a way to reach younger, less politically engaged voters.

Trump was meeting with TikTok CEO Shou Zi Chew at Mar-a-Lago on Monday, according to two people familiar with the president-elect’s plans who were not authorized to speak publicly about them and spoke to The Associated Press on condition of anonymity.

The companies have said that a shutdown lasting just a month would cause TikTok to lose about a third of its daily users in the U.S. and significant advertising revenue.

The case could attract the court’s interest because it pits free speech rights against the government’s stated aims of protecting national security, while raising novel issues about social media platforms.

The request first goes to Chief Justice John Roberts, who oversees emergency appeals from courts in the nation’s capital. He almost certainly will seek input from all nine justices.

On Friday, a panel of federal judges on the U.S. Court of Appeals for the District of Columbia Circuit denied an emergency plea to block the law, a procedural ruling that allowed the case to move to the Supreme Court.

The Supreme Court on Monday rejected an appeal from Wisconsin parents who wanted to challenge a school district’s guidance for supporting transgender students.

The justices, acting in a case from Eau Claire, left in place an appellate ruling dismissing the parents’ lawsuit.

Three justices, Samuel Alito, Brett Kavanaugh and Clarence Thomas, would have heard the case. That’s one short of what is needed for full review by the Supreme Court.

Parents with children in Eau Claire public schools argued in a lawsuit that the school district’s policy violates constitutional protections for parental rights and religious freedom.

Sixteen Republican-led states had urged the court to take up the parents’ case.

Lower courts had found that the parents lacked the legal right, or standing. Among other reasons, the courts said no parent presented evidence that the policy affected them or their children.

A unanimous three-judge panel of the 7th U.S. Circuit Court of Appeals included two judges Republican Donald Trump appointed during his first term.

But Alito described the case as presenting “a question of great and growing national importance,” whether public school districts violate parents’ rights when they encourage students to transition or assist in the process without parental consent or knowledge.

“Administrative Guidance for Gender Identity Support” encourages transgender students to reach out to staff members with concerns and instructs employees to be careful who they talk to about a student’s gender identity, since not all students are “out” to their families.