Republicans enter the midterm elections with majorities in both houses of Congress, but losing that majority could make it difficult to pass the president's decisions and legislation during the remaining two years of his term. So what does it mean for the president's party to lose a majority?

Republicans enter the midterm elections with majorities in both houses of Congress, but losing that majority could make it difficult to pass the president's decisions and legislation during the remaining two years of his term. So what does it mean for the president's party to lose a majority?