Marco Rubio: 'It's an honor to work for the greatest president in the history of the United States of America'

President Donald Trump brings Secretary of State Marco Rubio on stage during a GOP midterm campaign rally in Corpus Christi, Texas.

President Donald Trump brings Secretary of State Marco Rubio on stage during a GOP midterm campaign rally in Corpus Christi, Texas, where Rubio addresses supporters as Republicans look to build momentum ahead of the midterm elections.