The United States will begin restricting visas to citizens from six other countries on February 21, although critics question the move. The six countries are Myanmar, Eritrea, Kyrgyzstan, Nigeria, Sudan and Tanzania. The administration of President Donald Trump is adding them to existing travel restrictions for national security reasons. The U.S. government already has travel restrictions on some citizens from Iran, Libya, Somalia, Syria, Yemen, Venezuela and North Korea. The Trump administration announced the expanded travel restrictions last week. In a statement, acting Homeland Security Secretary Chad Wolf spoke about the bans. He said “It is logical and essential to thoroughly screen and vet everyone seeking to travel or immigrate to the United States.”