U.S. Secretary of Agriculture Brooke Rollins raised concern over Mexico's proposed constitutional amendment that would ban ...

A second measles-related death was reported out of New Mexico this week. Here's where measles cases have been reported in the U.S. this year.

Measles was declared eliminated in the United States in 2000 but has since made a comeback which experts attribute to international travel and the rise of anti-vaccine sentiment. It remains to be seen ...

United States tariffs on Mexican and Canadian imports took effect on Tuesday. The levies, set at 25 percent by US President ...