The Supreme Court blocks an executive order that would have ended birthright citizenship while allowing other Trump measures to curtail asylum admissions and expand detention and deportation powers.The court permits the administration to end Temporary Protected Status for nationals from Haiti and Syria, and to limit daily asylum processing at the southern border, while the White House accelerates visa revocations and suspends refugee resettlement.Advocates say the measures are producing family separations, forced returns of vulnerable people and a slowdown in legal immigration and population growth, and they expect prolonged litigation and congressional fights.