The travel ban forms part of Trump's policy to restrict immigration into the United States and is reminiscent of a similar move in his first term

President Donald Trump's new ban on travel to the U.S. by citizens from 12 mainly African and Middle Eastern countries is set to take effect Monday amid escalating tension over the president's unprecedented campaign of immigration enforcement.

President Trump's new travel ban takes effect today, blocking entry from 12 mostly African and Middle Eastern countries. People without valid visas will face strict entry rules. Trump says it targets public-safety and visa overstay risks.