A federal judge in Maryland could soon become the second to block President Donald Trump’s order restricting birthright citizenship from taking effect nationwide, if an appeals court were to allow it.

A federal judge on Friday could deal another blow to President Donald Trump's attempts to limit birthright citizenship, even though a U.S. Supreme Court decision last month made it more difficult for lower courts to block White House directives.

In 1898, in the landmark case of U.S. v Wong Kim Ark, the Supreme Court reaffirmed the birthright citizenship guarantee, clarifying that even if one’s parents were legally ineligible for U.S. citizenship, a child born on U.S. soil was a citizen.