President Joe Biden received his COVID-19 booster shot on Monday afternoon and delivered remarks encouraging vaccinations.

Thousands are newly eligible for the third shot, including people over 65, adults with underlying health conditions and workers in front-line jobs who got the second dose at least six months ago.

The administration is promoting new booster guidance that has spurred some confusion among Americans on when to get a third dose.

Biden got his first shot on Dec. 21 and his second dose three weeks later.

President Joe Biden, 78, qualifies for the shot under recent CDC guidance.

The president is encouraging those who are eligible to receive a booster shot in efforts to combat COVID-19.

As he nears 10 months in office, President Biden is at a critical juncture with multiple aspects of his legislative agenda either stalled or in peril on Capitol Hill.

President Joe Biden’s national security adviser Jake Sullivan is traveling to Saudi Arabia

In a stark reality check, Biden suggested talks could drag to the end of year.

Plus, the Centers for Disease Control and Prevention authorize Pfizer vaccine booster shots for millions of Americans.

The agents have been assigned to administrative duties during an ongoing investigation into the use of horses at the Del Rio border. No migrants remained at the Texas border encampment on Friday.

President Joe Biden harshly criticized Border Patrol agents, mounted on horseback, who confronted Haitian migrants, calling their actions "horrible."

President Joe Biden harshly criticized Border Patrol agents, mounted on horseback, who confronted Haitian migrants, calling their actions "horrible."

President Joe Biden said he’s confident Democrats will pass his spending bills but said it will “take some time” to deliver on his promises.

“The refusal to get vaccinated has cost all of us,” President Joe Biden said after the CDC authorized Pfizer booster shots for millions of U.S. citizens.

President Joe Biden engaged in intensive negotiations with congressional Democrats in an attempt to unify the party and save the infrastructure and social policy investments that are the core of his agenda.

President Joe Biden held a marathon of meetings Wednesday to try to save his sweeping legislative agenda from Democratic infighting. He met with Democratic lawmakers in the House and Senate.

Texas Gov. Greg Abbott sent state-owned vehicles to Del Rio to create a “steel wall” at the border. Democrats are angry the Biden administration used a Trump-era rule to allow deportations.

The White House and the Élysée Palace struck a reconciliatory note.

President Joe Biden announced the U.S. will buy and donate 500 million doses of the Pfizer vaccine to low-income countries around the world.

President Joe Biden addressed diplomats at the United Nations General Assembly to pitch his vision for an America-led response to COVID-19, the climate crisis and decades of conflict.

Plus, the president addresses world leaders at the UN General Assembly about the rise in pediatric COVID-19 cases.

This is what the president’s speech means for the U.S. and its relationships with allies and adversaries.

President Joe Biden's speech to the U.N. General Assembly Tuesday will preview "a chapter of intensive diplomacy" to address COVID-19 and climate change, officials said.

President Joe Biden discussed the United States’ role in the world in his speech at the United Nations General Assembly Tuesday morning.

The president told world leaders “we must work together as never before.”

President Joe Biden spoke at the U.N. General Assembly for the first time as president, addressing U.S. diplomacy amid tensions with allies.

ABC News' Cecilia Vega reports on what to expect from President Joe Biden's maiden speech to the United Nations General Assembly on Tuesday.

What to expect from the UN General Assembly’s week in New York.

The Biden administration is moving to protect workers and communities from extreme heat

President Joe Biden, Secretary of State Antony Blinken and Special Envoy for Climate John Kerry led a climate summit while Congress investigates allegations against big oil and gas companies.

House Democrats said Friday they planned to take action next week to suspend the cap on the government’s borrowing authority

Plus, the first gymnast to tell her sexual abuse survival story speaks out and the FDA is set to weigh in on the booster shot debate.

House Democrats advanced critical legislation late Wednesday that will help President Joe Biden deliver on a massive $3.5 trillion human infrastructure package.

The president called out the GOP over economic policy proposals and vaccine requirements for businesses.

President Joe Biden on Thursday laid out his plans for “leveling the playing field” in the U.S. economy and lifting up the middle class.

Gen. Mark Milley is facing criticism for seeking to undermine former President Donald Trump after revelations in a new book he called China to reassure them the U.S. wasn't planning to attack.

A former official told ABC News that then-Defense Secretary Mark Esper was actually the first official to initiate similar outreach to China.

President Joe Biden discussed parts of his infrastructure bill while touring the National Renewable Energy Laboratory in Colorado.

In his closing arguments for Gov. Gavin Newsom, President Joe Biden warned that the country's political future is on the ballot.

President Joe Biden made his first visit to the West Coast as president to survey wildfire damage and urge action on climate change.

President Joe Biden is putting the stakes of the recall election that could remove California Gov. Gavin Newsom from office in stark terms

President Joe Biden released a message to the nation focusing on the unity that followed the attacks

Governors in at least 19 states blasted the new rule as the CDC reported that more than 90% of patients in hospitals are unvaccinated.

Republicans are blasting President Joe Biden, threatening lawsuits and going as far as to call for civil disobedience to block his new vaccination mandates

Plus, the Dept. Of Justice is expected to sue Texas over the state’s abortion ban, and the U.S. Capitol steps up security.

As the delta variant plagues the nation, President Joe Biden outlined his plan to help combat the spread of COVID-19, calling it “a pandemic of the unvaccinated.”

President Joe Biden is expected to mandate vaccinations for federal workers and require businesses with more than 100 employees to require vaccinations or weekly testing.

President Joe Biden on Wednesday ousted Kellyanne Conway, Sean Spicer, and other Trump appointees from the boards of the nation's military academies.

Plus, the Biden administration is under pressure to take action after Texas enacted restrictive new abortion and election laws.