Becoming a U.S. citizen may get a lot more expensive, and groups are urging legal permanent residents to apply as soon as possible.

The Trump administration wants to increase the cost of citizenship applications by 83 percent for roughly 9 million immigrants eligible to become U.S. citizens.

U.S. Citizenship and Immigration Services at the Department of Homeland Security officially announced the proposed price hike Thursday, saying that "current fees do not recover the full costs of providing adjudication and naturalization services."

The citizenship application fee would go from $640 to $1,170 and fees associated with legal permanent residency will go up 79 percent — from $1,220 to $2,195.

Advocates like Angelica Salas, executive director of the Coalition for Humane Immigrant Rights, or CHIRLA,see the administration's proposal as "a targeted and brazen attack especially on those who are poor and vulnerable" because it seeks to price out immigrants "of their rightful place in our communities and in America."

The proposed rule also outlines a series of other kinds of fee increases that impact immigration-related applications for asylum-seekers, Temporary Protected Status beneficiaries, DACA recipients and legal permanent residents.

DACA renewals would increase from $495 to $765, possibly giving Trump officials a tool to limit the program in case the Supreme Court allows the program to continue despite the administration's efforts to end it.

The administration is also seeking to transfer $207.6 million of USCIS funding and divert it to Immigration and Customs Enforcement (ICE).

In the rule, USCIS argues that DHS had set citizenship application fees at an amount less than its estimated costs "in order to promote naturalization and immigrant integration," but DHS feels differently now, "given the significant increase" in citizenship applications in recent years.

The proposal now enters a public comment period that's expected to end Dec. 16, then USCIS is legally obligated to consider comments before the new rule can take effect, according to the National Partnership for New Americans, or NPNA, a network of immigrant advocacy organizations.

In the meantime, these groups are calling for millions of immigrants eligible to naturalize and become U.S. citizens before fees go up.

“If you were lacking motivation before, it’s now even more important because this outrageous rule aims to price out low-income and working-class immigrants from U.S. citizenship and so many other immigration benefits," Diego Iñiguez-López, NPNA's policy and campaigns manager, said in a statement.

Groups are also reminding legal permanent residents that applying soon could allow them to gain citizenship in time to register to vote in the 2020 November elections.

Rep. Jesús “Chuy” García, D-Ill., is one of several legislators who recently introduced a bill that seeks to limit the administration's ability to raise citizenship fees without congressional approval and allocates more funding and programs to make it easier for immigrants to apply for citizenship.

CHIRLA's Salas said Congress was "the only hope" to prevent Trump "from turning our immigration system into one that only serves the super elite."

While the overall percentage of lawful immigrants living in the U.S. choosing to apply for and gaining citizenship is at its highest level in more than two decades, Mexican Americans lag well behind other groups in terms of naturalization rate even though they are the single largest group of lawful immigrants by country of origin, according to the Pew Research Center.

While nearly all the Mexican American legal residents who were surveyed said they'd like to become U.S. citizens someday, one of the barriers cited was the cost of U.S. citizenship applications.

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