Heavily armed gangs have tried to seize control of Haiti’s main international airport, exchanging gunfire with police and soldiers. The Toussaint Louverture International Airport was closed at the time of the attack on Monday, with no planes operating and no passengers on site. It was the latest attack on key government sites in an explosion of violence that includes a mass escape from the country’s two biggest prisons....

The law, known as Senate Bill 4, had been set to take effect on Saturday and it would allow state officers to arrest people suspected of entering the country irregularly. A United States Supreme Court judge has temporarily blocked a bill that would hand authorities in Texas draconian powers to arrest and expel migrants and refugees who enter the country without documents. An order issued on Monday by...