The Lone Star State has sued the Biden administration more than any other Republican-led state, waging 25 lawsuits against the Democrat in his first 15 months in office.

Texas Attorney General Ken Paxton's filing rate is equally as high as his win rate. The federal courts have sided with him in 93% of cases in which there has been movement.

"The Biden administration is so dramatically wrong," Paxton said during an interview with the Washington Examiner in late March. "That's why the president is losing — he's wrong on the law."

Texas is more hellbent on suing the federal government than it has ever been, already tying the 25 lawsuits that Paxton's predecessor, now-Gov. Greg Abbott, waged against the Obama administration while attorney general. Paxton will undoubtedly set a new record for a GOP state challenging Washington.

The only state attorney general who has outpaced Paxton when it comes to suing the government is former California Attorney General Xavier Becerra, who waged 21 lawsuits against President Donald Trump in his first 10 months in office. Becerra filed 35 lawsuits 17 months into Trump's term. By the time Trump left office, Becerra had sued Trump 122 times in four years and was overwhelmingly successful in his challenges against the GOP leader. More than half of Becerra's legal complaints were over environmental rules, but a good chunk were wrapped up in immigration policy.

Immigration is also a leading concern for Texans, according to Paxton. Nine of the state's 25 lawsuits are over policy changes that the Biden administration implemented as it reversed Trump-era immigration policies, many of which Becerra initially sued Trump for imposing in the first place.

"It's not just about immigration. It's really about this fundamental principle — whether we have a Constitution that matters and if the president can just say, 'Look, I don't have to follow federal law. I just do what I want,' and the courts say, 'Yeah, that's fine. Do whatever you want. We don't care, and Congress, your laws don't mean anything to us,'" Paxton said. "If we don't defend those laws, and we don't defend our Constitution, then we don't have one. We are really a living, breathing document that gets made up by whoever's in charge, and that's not a free people. That's a ruling oligarchy or a monarchy."

"I think we're headed down that path," Paxton continued. "You either have to defend that and protect it, or you lose it."

Aaron Reitz, deputy attorney general for legal strategy, said the state's focus on immigration matters has been largely successful to date.

"The strategy of suing about immigration has been extraordinarily successful," Reitz said during the Texas Public Policy Foundation's conference in Austin in January. "That's how obviously unlawful [the Biden administration's] conduct is — that courts everywhere are just shutting down this administration's agenda. And so we're happy to have these wins."

Texas sued Biden as he took office, immediately hitting the White House with legal action over the Department of Homeland Security's 100-day suspension of deportations. Paxton won within a week.

Paxton said he viewed the lawsuit over the Migrant Protection Protocols, informally known as the Remain in Mexico policy, as the most significant immigration lawsuit. The policy requires asylum-seekers to return to and wait in Mexico while their claims go through U.S. courts, a monthslong process. The Supreme Court ordered the Biden administration to restart it last summer. Still, the government has only turned fewer than 2,000 people back to Mexico since relaunching in early December, even as more than 150,000 people are illegally encountered each month.

Texas sued when the DHS proposed changing who Immigration and Customs Enforcement officers were allowed to target for arrest and detention. This policy change ultimately resulted in an 85% drop in arrests and removals in fiscal 2021, in part due to ICE personnel being pulled to help at the southern border rather than pursuing the arrests of illegal immigrants within U.S. communities.

Paxton sued Biden for inadequately enforcing Title 42, a public health policy that Trump implemented at the start of the coronavirus pandemic in March 2020 to avoid detaining illegal immigrants who came across the southern border.

However, the Biden administration has only turned away slightly more than half rather than all, partly because some countries have refused to accept their citizens back. U.S. border officials at the southern border encountered noncitizens attempting to enter the country illegally more than 2 million times in 2021. Of the 2 million, 1.1. million were expelled under Title 42, and the majority of the remaining 900,000 were released into the U.S.

Biden's exemption for children has resulted in nearly 200,000 unaccompanied children being released into the U.S. after coming across the border.

The Biden administration is now concerned that fully walking back Title 42 this month could prompt a "mass migration event." Unable and unwilling to detain migrant families and adults, such a reversal would further add to the record-high 1.6 million cases before just 500 immigration judges nationwide.

The Biden administration's walking back of the public charge rule warranted another lawsuit in 2021. Under Trump, any immigrant deemed a "public charge," or someone believed to rely on government assistance, would not be able to become a permanent resident.

The state sued Biden for restarting the Central American Minors program, an Obama-era initiative that allows migrants who illegally crossed the border to petition that their children or relatives be able to join them in the U.S.

Paxton sued twice over border wall construction and the cancellation of federal contracts. Paxton asked for the court to require that Biden spend the billions of dollars that Congress allocated for barrier, technology, roads, and lighting in its DHS budgets from fiscal 2017 through 2021. Because Biden canceled the contracts, the wall has not been finished, but contractors and workers were legally obligated to get paid despite not working. Purchased materials for the projects have gone unused, or in one case, 1,700 massive panels of barrier donated to the state of Texas, intent on building its own border wall absent federal construction.

"There's plenty, though, that has been sitting on the ground. It's just rusting," Paxton said.

Paxton is encouraging the state legislature to pass bills they believe in and vowed, in return, to defend those laws should the Biden administration sue the state. The U.S. government has sued Texas seven times under Biden, all in addition to the 25 times Texas has sued the federal government.

"We have really good people, really smart people who are good at what they do," Paxton said about the state attorney general's office. "I've told the legislature, 'If you give me the resources to ... get good legal talent, we'll win.'"

Paxton did not clench more than 50% of the vote in the March primary and will face a runoff for the party's nominee against Texas Land Commissioner George P. Bush at the time of publication. Paxton is seeking a third term despite having been indicted and arrested by the FBI on criminal securities-fraud charges.