A federal judge has temporarily blocked President Donald Trump’s executive order ending the constitutional guarantee of birthright citizenship regardless of the parents’ immigration status.

Reich also criticises Trump's executive order to end birthright citizenship - where anyone born in the US becomes a citizen - saying it's a violation of the US constitution: "Decent people could lose their citizenship... children could lose their parents...some parents may not have the right papers."

A federal judge temporarily blocked President Trump’s executive order that aims to restrict automatic citizenship to babies born on U.S. soil, calling it “blatantly unconstitutional.” The order Mr. Trump signed on Monday was an effort to upend the nation’s immigration laws and reverse decades of precedent and would affect children born to undocumented or temporary immigrants.

Here's a guide to what birthright citizenship is, what happens if Trump's order ends it, and what comes next after lawsuits were filed.

A judge in Maryland heard arguments over the timing of the president’s order, which is set to go into effect in 30 days.

Four Democratic-led states will urge a federal judge in Seattle on Thursday to block U.S. President Donald Trump's administration from enforcing the Republican's executive order curtailing the right to automatic birthright citizenship in the United States.