Trump’s order targeting the Constitution’s 14th Amendment was hit with several legal challenges by Democratic attorneys general and was blocked by a federal judge Thursday afternoon. However, the Birthright Citizenship Act, introduced by House Science, Space, and Technology Chairman Brian Babin (R-TX), seeks to make the president’s order permanent.

Babin, alongside nine other House lawmakers, touted his support for the bill at the Capitol on Thursday and described the new piece of legislation, introduced Wednesday, as a way to fix a “loophole” in the original amendment, which was put forth following the Civil War in the 1860s.

“This is about ensuring the citizenship, a cornerstone of our national identity, is protected, respected, and aligned with the principles on which this country was built,” Babin said during a press conference Thursday. “This is the time, ladies and gentlemen, to pass this legislation, which has been plaguing our country for well over 100 years. This opportunity will not come again, at least not for a long, long time.”

Babin introduced his bill one day after Trump took executive action and said it was based on a “flawed” interpretation of the 14th Amendment, aimed at protecting recently freed slaves in the South, not illegal immigrants who have used it heavily in recent history. Babin’s bill would restore the 14th Amendment to the original purpose outlined 150 years ago.

“This common-sense legislation corrects decades of misuse and closes the loophole that incentivizes illegal immigration and exploits U.S. citizenship through birth tourism,” Babin said in a statement. “Citizenship is one of our nation’s most precious privileges. By introducing this legislation, we are taking an important step to restore integrity to our immigration system and prioritize the interests of American citizens.”

Babin’s bill would not eradicate birthright citizenship, instead supporting it in certain circumstances, such as when a child is born to a citizen or national of the United States, a lawful permanent resident whose residence is in the U.S., or a lawful immigrant performing active service in the Armed Forces. 

Rep. Andy Biggs (R-AZ) said birthright citizenship has been abused by illegal immigrants for over a century.

“If the Framers of the 14th Amendment would have known how abused the notion of birthright citizenship would be, which was not even a notion in the 1860s, they would have been absolutely stunned,” Biggs said at the press conference.

Rep. Diana Harshbarger (R-TN), the only woman in the group, said birthright matters are part of a “big-time industry” aimed at getting pregnant women to the U.S. just in time to give birth, knowing their child will be a U.S. citizen.

“People will come from many, many countries to give birth, and they pay a lot of money to get here,” said Harshbarger. “This bill would negate that, and so, therefore, would stop that stream. … There’s other people making money off this, so just be aware of that.”

While the amendment is not expected to be included in reconciliation legislation going through Congress at the moment, the bill has not been assigned a dollar value in terms of how much it would cost if enacted.

The bill faces an uphill battle. Two-thirds of the House and Senate would have to approve it, as well as 75% of state legislatures.