Apr 01, 2026; Washington, DC, USA; People wait in line outside the US Supreme Court to be let in to hear oral arguments for Trump v. Barbara in Washington, DC, on April 1, 2026. The court is reviewing a lower court's rejection of Trump’s argument that children of parents who are in the country illegally or temporarily are not entitled to citizenship. The president's interpretation of a 19th century constitutional provision would fundamentally alter how the citizenship clause has long been understood.; Mandatory Credit: Josh Morgan-USA TODAY via Imagn Images