Authorities say the number of people arrested or stopped entering the United States along the Mexico border fell for a seventh straight month in December, with Mexicans outpacing Central Americans among the detainees. U.S. authorities said they made 40,620 arrests or detentions of people on the Mexico border in December, down 5% from 42,651 in November and down 72% from a 13-year high of 144,116 in May.
