Trump travel ban: Why is Trump banning millions from the US again?

US President Donald Trump has reintroduced a sweeping travel ban targeting 19 countries, citing national security and insufficient vetting systems. The proclamation, which takes effect from 9 June, imposes full or partial entry restrictions on nations such as Afghanistan, Iran, and Haiti. Trump justified the move following a violent incident in Colorado and linked it to his broader anti-immigration agenda. Critics argue the ban undermines US values, disrupts communities, and revives prejudiced policies from Trumps earlier term.