Doesn't.
Let's see.
President Joe Biden made clear Tuesday evening he was not encouraging Taiwan's "independence" after using the word an hour earlier to describe the progress he made during a discussion of the island with his Chinese counterpart Monday evening.
www.cnn.com
November 16, 2021
"Biden says Taiwan's independence is up to Taiwan after discussing matter with Xi"
His comments are an apparent departure from the long-held US position of "strategic ambiguity".
www.bbc.co.uk
22 October 2021
"Biden says US will defend Taiwan if China attacks"
It's an open secret that Taiwan welcomed the Trump administration's policy to significantly strengthen U.S.-Taiwan relations, and it was jittery about the transition to the Biden administration. Early indications, however, are that the Biden team appears poised to opt for a stronger relationship...
www.rand.org
February 5, 2021
"Biden Doubles Down on Trump's Taiwan Policy, but Will It Last?"
"However, the Biden administration thus far has embraced the Trump decision to upgrade Washington's unofficial partnership with Taipei. "
Former U.S. Senator Chris Dodd and former Deputy Secretaries of State Richard Armitage and James Steinberg headed to Taiwan on Tuesday at President Joe Biden's request, in what a White House official called a "personal signal" of the president's commitment to the Chinese-claimed island and its...
www.reuters.com
"Biden sends unofficial delegation to Taiwan in ‘personal signal’"
April 14, 2021
"Former U.S. Senator Chris Dodd and former Deputy Secretaries of State Richard Armitage and James Steinberg headed to Taiwan on Tuesday at President Joe Biden’s request, in what a White House official called a “personal signal” of the president’s commitment to the Chinese-claimed island and its democracy."
Taiwan's ties with its most important global backer the United States are off to a strong start under President Joe Biden's government, after the island's de facto ambassador attended an inauguration for the first time with an official invitation.
www.reuters.com
"Taiwan-Biden ties off to strong start with invite for top diplomat"
JANUARY 21, 2021
"Taiwan’s ties with its most important global backer the United States are off to a strong start under President Joe Biden’s government, after the island’s de facto ambassador attended an inauguration for the first time with an official invitation."
I'm getting pro-Taiwan sentiment from Biden almost every month of his presidency. We've got January, February, April, October, November here and I didn't even search based on date.