Democrats in Congress are urging President Joe Biden to consider using the 14th Amendment should debt ceiling talks fail.

More than a dozen left-wing senators — including high-profile members Bernie Sanders (I-VT), Elizabeth Warren (D-MA), and John Fetterman (D-PA) — sent a letter to Biden on Thursday warning that it may be the president’s only option to avoid a default if Republicans don’t agree to a deal.

“Using this authority would allow the United States to continue to pay its bills on-time, without delay, preventing a global economic catastrophe,” they wrote.

The senators cite Section Four of the 14th Amendment, which states the “validity of the public debt of the United States, authorized by law, including debts incurred for payment of pensions and bounties for services in suppressing insurrection or rebellion, shall not be questioned.”

Biden said last week he would consider invoking the 14th Amendment, noting that leftist Harvard Law professor Laurence Tribe “thinks that it would be legitimate,” though the president warned the matter would likely be litigated and “in the meantime, without an extension, it would still end up in the same place.”

While Republicans have highlighted other legal experts who have argued against the president trying to employ the 14th Amendment, even officials within Biden’s own administration have expressed hesitation. Treasury Secretary Janet Yellen has said in recent days that invoking the 14th Amendment is “legally questionable” and could create a “constitutional crisis.”

Rep. Jamie Raskin (D-MD), the top Democrat on the House Oversight Committee, advised Biden to lean into the tactic anyway, telling Insider the 14 Amendment serves as “an operations manual for how the president should respond to extortion and threats by a faction of Congress.”

Yellen notified Congress in January that the United States had hit the statutory limit of roughly $31.4 trillion and advised that her agency take “extraordinary measures” so the government could continue to pay its bills, but only in the short term. That buffer period could run out as soon as next month, leading officials to warn of dire consequences for the economy.

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For a time there had been a standoff between White House and top Democrats in Congress, who pushed for a “clean” debt ceiling raise, and the GOP-led House, which passed a bill that would allow the limit to be lifted by $1.5 trillion in exchange for spending cuts and reforms. The conservative House Freedom Caucus underscored the rift on Thursday by declaring a hardline position, calling for the Democrat-led to pass the House legislation for there to be further talks.

Still, there are signs that an agreement may soon be reached as the White House and congressional leaders engage in talks. The White House touted a “productive and direct meeting” on Tuesday and, on Thursday, House Speaker Kevin McCarthy (R-CA) told reporters he sees a “path” to a deal.

Vatican gendarmes shot at a vehicle’s tires Thursday after an unidentified man in a “serious state of psychophysical alteration” rushed through a Vatican gate and into a palace courtyard, where authorities arrested him.

The Holy See said in a news release that authorities arrested the man, who is in his 40s, and immediately subjected him to a visit by the doctors of the Directorate of Health and Hygiene of the Vatican City State.

“Currently, the person is in a prison cell in the new premises of the Gendarmerie Barracks, at the disposal of the Judicial Authority,” according to the statement obtained by The National Catholic Registry.

The driver pushed through the Santa Anna entrance around 8 p.m., after which a guard fired his gun at the vehicle’s tires, hitting the left front fender until the man exited the vehicle at the San Damasco Courtyard of the Apostolic Palace and was placed under arrest by the Gendarmerie Corps, the press office said.

Vatican officials said authorities initially turned away the man when he first approached the gate to enter the Vatican City State in Rome.

“Regardless of the indications provided to him by the Pontifical Swiss Guard, which prevented him from entering the State without the relative authorizations, he temporarily left the entrance and, after having maneuvered, returned at high speed, forcing the two control gates, of the Swiss Guard and of the Gendarmerie of the Vatican City State,” the press office said.

It was unclear if Pope Francis was near the incident, The Associated Press reported, noting that the pope lives on the other side of Vatican City at the Santa Marta hotel, where he would typically be having dinner at that time of night.

Vatican authorities reportedly shut the main gate in front of Francis’ hotel as soon as the gendarmes sounded the alarm for an incursion, according to The Associated Press.

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In 2009, a woman was removed by Vatican guards after she breached a barrier and grabbed the vestments of Pope Benedict XVI while he walked down the main aisle of the church during a Christmas Eve Mass at St. Peter’s Basilica.

The pope did not suffer any injuries in the 2009 incident and resumed the service after attendants helped him stand up, but the disturbance caused a cardinal walking in the procession to break his hip.