Rep. Mo Brooks and potential presidential hopeful Ben Carson both suggested a connection between illegal immigration and the spread of diseases such as measles in the United States.
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FactCheck.org’s SciCheck feature focuses exclusively on false and misleading scientific claims that are made by partisans to influence public policy. It was launched in January 2015 with a grant from the Stanton Foundation. The foundation was founded by the late Frank Stanton, president of CBS for 25 years, from 1946 to 1971.