A federal judge has blocked U.S. President Donald Trump's latest attempt to limit birthright citizenship, granting a preliminary injunction against an executive order that the administration said would target “birth tourism.” U.S. District Judge Deborah L. Boardman in Maryland on Wednesday issued the injunction until a class-action lawsuit brought by immigrant families and advocacy groups is resolved. “The Supreme Court has spoken: Children in the certified class are ‘citizens at birth,’” Boardman, appointed by President Joe Biden, wrote in Wednesday's ruling. Birthright citizenship is guaranteed under current law for anyone who is born on U.S. soil, with a few exceptions. The law stretches back to 1868, when the 14th Amendment was ratified in the aftermath of the Civil War. But Trump has long wanted to end birthright citizenship, issuing a previous executive order declaring that children born to people who are in the United States illegally or temporarily are not American citizens. The Supreme Court struck down that attempt in June. In August, the president tried again with a