Multiple Democrats are publicly expressing concern that President Joe Biden's administration hasn’t done enough to prepare for the expected fallout from Title 42 expiring.

Title 42, a pandemic-era policy that allowed the United States Border Patrol to expel migrants without an asylum hearing, is set to expire Thursday due to the end of the pandemic. Blowback from Biden's own party has been most pronounced from border state Democrats and even includes some who have historically been reticent to criticize him by name.

ALEJANDRO MAYORKAS DOWNPLAYS FEARS OF IMMIGRANTS SURGE AFTER TITLE 42 ENDS

Border communities are bracing for an influx of illegal immigrants who believe they will soon be able to successfully gain entry into the U.S. once Title 42 goes away.

“I’ve heard directly from leaders in our border communities and it’s abundantly clear that they, through no fault of their own, are simply unequipped to handle the surge of migrants that are expected when Title 42 ends,” Rep. Ruben Gallego (D-AZ) said in a statement released with a letter to Biden on the policy. "With Title 42 set to end on May 11, we need the Biden administration to act, and to act fast."

Gallego urged the Biden administration to ramp up resources for border communities and boost transparency. He announced his candidacy for the Arizona Senate seat held by Sen. Kyrsten Sinema (I-AZ), a perennial thorn in Biden's side, back in January.

Sinema, who switched her party affiliation from Democrat to independent last December, has been even more forceful against the Biden administration publicly. Last week, she penned a joint op-ed with Rep. Juan Ciscomani (R-AZ) ripping the Biden administration on Title 42. She echoed those sentiments at a recent event.

"The Biden administration had two years to prepare for this and did not do so. Our state is going to bear the brunt. Migrants will be in crisis as soon as next week. It will be a humanitarian crisis because we’re not prepared," Sinema warned at the McCain Institute's Sedona forum.

Angst among Democrats has taken various forms, such as letters to the administration and public statements making various requests as they brace for a potential crisis that could feed Republican criticism ahead of 2024.

Republicans are latching onto the situation and putting many Democrats on defense. House Republicans are planning to vote on a border security bill Thursday, the same day Title 42 will be lifted. The Biden administration has threatened to veto that measure.

"U.S. House Republicans plan to initiate debate about immigration reform in the coming weeks. I urge you and the White House to join me in engaging in these conversations about what the landscape for immigration reform in our country should look like," Rep. Sharice Davids (D-KS) wrote in a letter to Biden Monday.

The Biden administration has sought to allay fears of a crisis but has also attempted to temper expectations.

"We've been preparing for this for more than a year and a half," Department of Homeland Security Secretary Alejandro Mayoraks told CBS's Face the Nation over the weekend. "We are working closely with many countries to the south. It's going to take our plan a while to really take hold."

Many border state Democrats have long been vexed by the Biden administration's policies toward the U.S.-Mexico border. Rep. Henry Cuellar (D-TX), for instance, zinged Biden late last year for declining to visit the border during his first two years in office. Biden later toured El Paso back in January as part of his first visit to the border as president.

Cuellar recently gave Biden credit for tacking more to the middle on immigration recently, but lamented that it wasn't enough.

“Now, the administration needs to go to the center, and I’ve asked them to go to the center, and I think some of the policies that they’re about to implement brings them to the center, in my opinion. A little bit too late, but at least they’re getting policies that will come to the center,” he told Fox News Sunday.

One major move Biden announced last week to stem the potential crisis was to dispatch 1,500 troops to the border to help bridge security gaps for roughly three months, though they won't directly assist with "enforcement work," according to Mayorkas.

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This drew flack from Senate Foreign Relations Committee Chairman Bob Menendez (D-NJ) and Republicans such as Lindsay Graham (R-SC), who decried the move as "ridiculous theater." Menendez said the move is "unacceptable."

“The administration has had over two years to plan for the eventual end of this Trump-era policy in a way that does not compromise our values as a country. I have offered them a strategic and comprehensive plan, which they have largely ignored," Menendez said in a statement.

"Trying to score political points or intimidate migrants by sending the military to the border caters to the Republican Party’s xenophobic attacks on our asylum system," he added.

Sen. Mark Kelly (D-AZ) applauded Biden for sending "additional manpower" to the border. But he has also been prodding the administration to step up its game. Last week, he joined Sinema in a letter to the administration requesting Mayorkas "avoid migrant street releases." Earlier this year, he was more blunt.

"They don’t have a plan for when Title 42 goes away. I still don’t think they have a plan. So this is a process of me pushing the administration and sometimes getting results and also having to drop legislation," he told Fox News in May.

Perhaps Biden's biggest Democratic maverick to contend with, Sen. Joe Manchin (D-WV), sharply criticized the administration's handling of the situation. The senator has stepped up his criticism of Biden recently after drawing Gov. Jim Justice (R-WV) as a candidate for his Senate seat. Manchin has not yet revealed his 2024 plans.

"It is truly a shame we continue to govern from crisis to crisis. Despite ample notice about the pending expiration of Title 42, the administration has failed to properly secure our southern border," Manchin tweeted.

Many of these Democratic misgivings against Biden on immigration have been brewing for months. In April, for instance, Reps. Lou Correa (D-CA), Adriano Espaillat (D-NT), and Chuy García (D-Ill) penned a letter to Mayorkas requesting that the administration take more steps to prepare for an onslaught of migrants.

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Already, the Biden administration has presided over a record number of border encounters for fiscal 2022, which ended last September, according to U.S. Customs and Border Protection.

Last week, Sinema and Sen. Thom Tillis (R-NC) proposed legislation that would effectively preserve Title 42's rapid expulsion policy without using a national health order to do it. The legislation is very unlikely to clear Congress before Title 42 expires.