New Jersey and more than a dozen states said Tuesday they are challenging President Donald Trump’s executive order ending the constitutional guarantee of birthright citizenship.

New Jersey Democratic Attorney General Matt Platkin said Tuesday that he’s leading a group of 18 states, the District of Columbia and the city of San Francisco in filing a lawsuit blocking Trump’s order.

“Presidents have broad power but they are not kings,” Platkin said.

Trump’s order would end the policy of automatically granting citizenship to people born in the U.S., a move he said on the campaign trail he would do once in office.

Platkin and immigrants rights advocates point to the 14th Amendment to the Constitution that says people born in the U.S. and subject to its jurisdiction are citizens, saying it’s clear that it applies to people whose parents were not legally citizens at the time of their birth.

THIS IS A BREAKING NEWS UPDATE. AP’s earlier story follows below.

President Donald Trump moved to end a decades-old immigration policy known as birthright citizenship when he ordered the cancellation of the constitutional guarantee that U.S.-born children are citizens regardless of their parents’ status.

Trump’s roughly 700-word executive order, issued late Monday, amounts to a fulfillment of something he’s talked about during the presidential campaign. But whether it succeeds is far from certain as immigration advocates file lawsuits to block the president.

Here’s a closer look at birthright citizenship, Trump’s executive order and reaction to it:

What is birthright citizenship?

Birthright citizenship means anyone born in the U.S. is a citizen, regardless of their parents’ immigration status. People, for instance, in the United States on a tourist or other visa or in the country illegally can become the parents of a citizen if their child is born here.

It’s been in place for decades and enshrined in the 14th Amendment to the Constitution, supporters say. But Trump and allies dispute the reading of the amendment and say there need to be tougher standards on becoming a citizen.

What does Trump’s order say?

The order questions that the 14th Amendment extends citizenship automatically to anyone born in the United States.

The 14th Amendment was born in the aftermath of the Civil War and ratified in 1868. It says: “All persons born or naturalized in the United States and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside.”

Trump’s order excludes the following people from automatic citizenship: those whose mothers were not legally in the United States and whose fathers were not U.S. citizens or lawful permanent residents; people whose mothers were in the country legally but on a temporary basis and whose fathers were not citizens or legal permanent residents.

It goes on to bar federal agencies from recognizing the citizenship of people in those categories. It takes effect 30 days from Tuesday, on Feb. 19.

NEW JERSEY (WABC) — Gov. Phil Murphy said he sent President Donald Trump a letter on congestion pricing Monday to request a reexamination of federal approval on the plan.

“As you begin your second term as President, I welcome any opportunity to work with you and your Administration where we can find common ground,” wrote Governor Murphy. “One area where I believe our priorities align is congestion pricing.”

He went on to call the current congestion pricing plan a “scheme.”

“The current congestion pricing scheme is a disaster for working and middle-class New Jersey commuters and residents who need or want to visit lower Manhattan and now need to pay a big fee on top of the bridge and tunnel tolls they already pay,” continued Governor Murphy. “And, adding insult to injury, New Jersey communities are not being fully compensated for the additional traffic and attendant pollution that will be re-routed to them because of congestion pricing.”

Lawyers for New Jersey told a judge they will file an updated legal challenge to the Federal Highway Administration’s “multiple re-evaluations” of congestion pricing.

The legal move keeps New Jersey’s opposition in federal court to the toll pricing going as Trump takes office.

The state plans to drop its unsuccessful attempts to get a restraining order against New York, denied by both a federal judge in Newark and by an appeals court in Philadelphia.

It will instead continue to file challenges with Judge Leo Gordon in Newark, who largely ruled against attempts to block congestion pricing but seems sympathetic to some of New Jersey’s arguments against it.

“New Jersey intends to seek leave of the Court to file an amended complaint to challenge the Federal Highway Administration’s multiple re-evaluations of the congestion pricing program,” attorney Randy Mastro wrote in court papers. “New Jersey expects to file its application shortly.”

Separately, New Jersey will soon launch a $20 million program to give New York businesses in the central business district grants to allow New Jersey residents to work remotely or at a satellite office in the Garden State.

The state will advertise this new program – dubbed NJ RISE, or New Jersey Re-assigning In State Employees program — with billboards at the major bridges and tunnels.

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