WASHINGTON (AP) — The Latest on President-elect Donald Trump (all times EST):

12:20 p.m.

President-elect Donald Trump is threatening to end the detente with Cuba initiated by the Obama administration.

Trump tweeted Monday he "will terminate" President Barack Obama's reestablishment of diplomatic ties and normalization of relations if "Cuba is unwilling to make a better deal for the Cuban people, the Cuban/American people and the U.S. as a whole."

But Trump's warning could face opposition from some Republicans on Capitol Hill and corporate leaders who see continued engagement with Havana as good for American businesses and the best way to force the Cuban government to change.

Arizona Republican Sen. Jeff Flake said this past weekend a "get tough" policy that isolates Havana and restricts travel and commerce will hurt the Cuban people and make the U.S. government "a convenient scapegoat for failed socialist policies."

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11:55 a.m.

The Green Party says it will ask a Pennsylvania court to order a statewide recount of the state's Nov. 8 presidential election result.

But it's unclear if the courts would have authority to do so.

A lawyer for Green Party presidential candidate Jill Stein wouldn't discuss what would be alleged in the expected lawsuit Monday.

Republican President-elect Donald Trump edged Democrat Hillary Clinton by about 71,000 votes, or about 1 percent, in Pennsylvania.

Democratic Secretary of State Pedro Cortes says there's no evidence of voting irregularities or cyberattacks on Pennsylvania's voting machines, 96 percent of which record votes electronically and leave no paper trail.

A GOP lawyer says the courts lack authority to order a statewide recount. Cortes says he's also unaware of the courts having authority to do so

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11:50 a.m.

A Republican member of the Electoral College from Texas says he's resigning so he won't cast one of the state's 38 electoral votes for Donald Trump.

Art Sisneros previously told The Associated Press that he was wavering on supporting Trump because the Republican "is not biblically qualified for office."

In a lengthy weekend blog post, Sisneros updated that, saying "the best option I see at this time is to resign my position as an elector."

Texas doesn't require its presidential electors to vote in accordance with the state's presidential election results. Trump won Texas by around 9 percentage points and captured 290 overall electoral votes to Hillary Clinton's 232.

Texas electors meet in Austin next month to vote for president. By state law, they can vote then on a replacement for Sisneros.

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10 a.m.

President-elect Donald Trump is claiming, without evidence, that millions of people voted illegally in the election he won, issuing the baseless claim as part of his angry response to a recount effort led by the Green Party and joined by Hillary Clinton's campaign.

Trump tweeted on Sunday that he won the popular vote "if you deduct the millions of people who voted illegally." He later alleged "serious voter fraud in Virginia, New Hampshire and California."

Trump's transition team did not provide any evidence to back up the president-elect's assertions of fraud in the November election. They pointed only to past charges of irregularities in voter registration.

There has been no evidence of widespread tampering or hacking that would change the results of the presidential contest between Trump and Clinton.