Teens stand in cage outside U.N. building to protest U.S. immigration policy

People hold placards during a demonstration by an international delegation of global labor leaders, civil society and students to condemn the U.S. President Donald Trump administrationÕs policy of child detention and migrant family separation in front of the United Nations in Geneva, Switzerland, June 17, 2019. REUTERS/Denis Balibouse

GENEVA (Reuters) - Teenagers stood inside a metal cage outside U.N. headquarters in Geneva on Monday to punctuate a protest by American and Mexican activists demanding that migrant children in U.S. custody be reunited with parents seeking asylum.

U.S. President Donald Trump has made reducing illegal immigration one of his signature policy pledges amid a surge of migrants trying to cross from Mexico into the United States.