U.S. President Joe Biden's administration has been stocking up millions of doses of COVID vaccines with authorizations for the U.S. Meanwhile, allies of the country said that the doses should be used now to save lives.

There is a growing debate whether who should have access to the said COVID vaccines. Meanwhile, Biden earlier said that he would ensure that every American has access to a dose before giving away some to any other nations.

On Tuesday, Biden said that the U.S. is currently in talks with other countries about who will get any extra doses of COVID vaccines, according to a Reuters report.

"We're talking with several countries already," Biden was quoted in a report.

He added that he will let the public know about it very shortly.

Mexico Vaccine Request

A senior Mexican official said on Tuesday that the United States should respond by Friday to Mexico's request to share doses of AstraZeneca's vaccine doses it has in stock.

Canadian authorities also confirmed that they asked Mexico for extra doses, according to another Reuters report.

"I'd say we've made good progress, but the details, figures, provisions, won't be known until Friday," Mexican Foreign Minister Marcelo Ebrard was quoted in a report.

Ebrard added that they have requested as many vaccine doses as possible.

Mexican President Andres Manuel Lopez Obrador asked Biden for a vaccine loan during their meeting earlier this month. This was after Mexico's vaccine distribution program was disrupted due to logistical challenges from Pfizer-BioNTech.

Lopez said that they are hoping for the help, support, and solidarity of the U.S. government.

Meanwhile, the White House National Security Council spokesperson said that the U.S. priority as of the moment is to vaccinate as many Americans as they could, adding that the U.S. has surplus vaccines from the initiative they will share them.

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Vaccine Supply Conflict

Biden's insistence of creating extra supply for the U.S. is creating new openings for its geopolitical rivals Russia and China, according to an Associated Press report.

AstraZeneca has already received emergency clearance from the European Union and World Health Organization but not from the U.S.

U.S. allies are now prompting Biden to release his supply, citing that the U.S. already has three authorized vaccines to cover American adults by the end of May and the entire population by the end of July.

However, AstraZeneca claims that the U.S.-produced vaccines are owned by the federal government, which would require the White House's approval before sending them overseas.

Before the year ends, Pfizer-BioNTech and Moderna vaccines became available for administration after it had received an emergency authorization in the U.S.

Johnson & Johnson was given the green light last month with its one-dose vaccine. Biden administration said that supplies would be limited for this vaccine for the first month, according to The New York Times report.

J & J initially has 3.9 million shots available, with 16 million more coming by the end of the month. The vaccine developer committed to delivering 37 million doses by the end of March and a total of 100 million by the end of June.

Meanwhile, Novavax could apply for emergency authorization for its two-shot vaccine in April, despite it not being as effective against the South Africa variants.

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WATCH: Biden Directs States To Make All Adults Eligible For Covid Vaccines On May 1 - from NBC News