A new state law in California could incentivize "bad actors" from around the world to skirt custodial laws by relocating to the Golden State, a conservative legal group claims.

"We think it's a drastic overreach by California," Emilie Kao, senior counsel for Alliance Defending Freedom (ADF), told Fox News Digital. "Not only does it violate parents' fundamental rights to direct the upbringing of their children, it also violates federal law on child custody and jurisdiction because it basically supersedes the federal law that gives jurisdiction to states on child custody matters."

California Gov. Gavin Newsom last week signed SB 107, which will block state officials from enforcing laws from other states that hinder access to transgender medical procedures and drugs.

"With this law, California is basically saying it can take temporary emergency jurisdiction over any child from anywhere if there's a disagreement between a parent and the state of California over how to treat a child's gender distress," said Kao, whose organization was one of 50 groups that sent a letter of protest to Newsom over SB 107.

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Gavin Newsom speaking in San Francisco

California Gov. Gavin Newsom speaks in San Francisco Sept. 14, 2021. (AP Photo/Jeff Chiu, File)

Originally sponsored by state Sen. Scott Wiener, a Democrat from San Francisco, the bill passed the state legislature in late August after recent efforts from some states to ban transgender procedures and drugs for minors. The bill effectively sets up California as a sanctuary for those seeking to escape those laws.

Under the California law, state agencies and law enforcement organizations are now banned from cooperating with subpoenas and other out-of-state legal actions on these matters, and both children and parents seeking to obtain or provide transgender services are shielded from legal consequences.

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"SB 107 protects families with transgender children by ensuring parents aren’t tossed in prison for allowing their trans kids to access health care," Wiener told Fox News Digital about the law. "Texas, Alabama and other states are literally threatening to incarcerate parents — and physicians — for allowing this health care. SB 107 protects these parents and physicians by making clear California isn’t going to be a party to these horrific laws."

California state Sen. Scott Wiener

California state Sen. Scott Wiener, D-San Francisco, speaks on a measure at the Capitol in Sacramento, Calif., March 31, 2022. (AP Photo/Rich Pedroncelli, File)

Alliance Defending Freedom sees it differently.

"With this law, California is basically saying it can take temporary emergency jurisdiction over any child from anywhere if there's a disagreement between a parent and the state of California over how to treat a child's gender distress," Kao said.

She added that SB 107 also "carves out a massive exemption to all existing laws on child custody and on the respect for other states' jurisdiction," which she predicts will lead to costly, drawn-out interstate litigation that will waste California tax dollars.

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"Already, several states have taken very positive steps to protect children from the irreversible harms of not only experimental use of puberty blockers and cross sex hormones, but even life-altering surgeries like double mastectomy, even hysterectomy," Kao explained. "These are surgeries that cannot be reversed, and that will leave children with permanent damage, including possibly sterilization."

Trans protester at Ohio Statehouse in 2021.

A protester holds the trans flag and snaps in solidarity with other speakers, during a demonstration at the Ohio Statehouse in Columbus, Ohio, June 25, 2021. (Stephen Zenner/SOPA Images/LightRocket via Getty Images)

Explaining how the law potentially denies parents access to medical information about their child if that child is in California, even if they were taken there or ran away there, Kao said the law "creates very bad incentive that basically carves out an exception to normal protections of children by saying that anyone can take a child to California, and it won't be treated in the way that taking a child from their custodial parent normally would be treated.

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"So it gives an incentive to bad actors, bad parents and ill-meaning relatives to take a child away from the custodial parents to California. It also creates a very dangerous incentive for children to run away from their homes and other states if they have a disagreement with their parents over the issue of gender distress," Kao continued.

Gavin Newsom speaking

Democratic California Gov. Gavin Newsom speaks during a bill signing ceremony Feb. 9, 2022. (Justin Sullivan/Getty Images)

"We also think that, in addition to the other states that could be challenging this law, this one could really affect a child from anywhere in the world, not only American children, but really any child could be subject to this law if they are in the state of California," Kao added. "So there are a lot of possibilities for litigation."

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"There is a lot of misinformation about what this bill does and doesn’t do," a spokesperson for Newsom's office told Fox News Digital. "It protects parents seeking medical care for their child. States like Texas are trying to turn parents into criminals for doing what they think is best for their child. In California, we are making sure parents aren’t prosecuted for their kids getting the care they need."

Fox News' Tyler Olson contributed to this report.