Cardinal and Vatican clerks congratulate Pope Leo XIV.

On an episode of ABC's "The View" former President Joe #Biden denied he suffered cognitive decline while serving in the White House, saying allegations trickling out since he departed his position were off base.

The FAA will embark on an ambitious three-year plan to modernize America’s air traffic control systems, President #Trump and Transportation Sec. Duffy announce.

U.S. #senators react to news about the new leader of the Catholic Church, #Pope Leo XIV, being an American.

British Prime Minister Keir Starmer announces that the U.K. has reached an agreement with the United States on trade that will reduce nontariff barriers for U.S. exports. Starmer praised the deal, calling it "truly historic" and touting the two countries' close alliance.

John Prevost, Pope Leo XIV’s older brother, talks to @NBC Chicago about his conversations with his brother before the #conclave.

Major #challenges lie ahead for the new leader of the #Catholic Church, #Pope Leo XIV, including the already-existing financial issues within the institution.

Here are the first moments when Cardinal Robert Francis Prevost, the first American-born #pope, was introduced to the world as Pope Leo XIV in #VaticanCity.

Pope Leo XIV addresses crowds from the balcony of St. Peter's Basilica in his first appearance as the new Catholic leader.

In a historic moment, Pope Leo XIV makes his first public appearance from the balcony of St. Peter's Basilica after being selected as the successor to Pope Francis.

Pope Leo XIV is the first pontiff from the U.S. and Chicagoans are already proudly claiming him as their own.

Never in the history of the Roman Catholic Church has there been an American #pope — until now: Pope Leo XIV.

American cardinal Robert Francis Prevost has been chosen by the conclave to be the next pope. He will be known as Pope Leo XIV.

People dash to St. Peter's Square as bells ring, signaling a new #pope for the Catholic Church has been chosen by the cardinal electors.

Crowds in St. Peter’s Square erupt into cheers as white smoke appears above Vatican City, indicating the conclave have elected a new pope after two days of voting.

This tailor in Rome will dress the new pope. He’s dressed the last three and has prepared 3 cassocks ahead of the new pope’s election to make sure one fits. NBC News’ Claudio Lavanga reports.