Biden says he hopes to give COVID vaccines to other countries by summer

President Biden on Tuesday said he hopes the United States will have ample COVID-19 vaccine supply for domestic use by this summer and enough doses to share the inventory with other countries.

The state of play: Biden on Tuesday ramped up his administration's vaccine timeline, ordering all states to make the shots available to Americans ages 16 and older by April 19. He previously set May 1 as the target date.

• Biden also noted on Tuesday that the U.S. has administered 150 million coronavirus vaccine doses in the first 75 days of his presidency.

Between the lines: The U.S. has already started planning for vaccine sharing with some neighboring countries, including Canada and Mexico.

• But those doses are expected to be manufactured by AstraZeneca, which has not yet received an emergency use authorization in the U.S.

Vaccine allowances can also be a negotiating tool for diplomatic use. The proposal to send vaccines to Mexico came amid rising tensions at the U.S.' southern border in response to an uptick of unaccompanied minors traveling to America.

• White House press secretary Jen Psaki said last month there were "several diplomatic conversations, parallel conversations, many layers of conversations" during the decision-making process to send vaccines to Mexico.