Open: This is “Face the Nation with Margaret Brennan,” July 31

Open: This is "Face the Nation with Margaret Brennan," July 31

This week on "Face the Nation with Margaret Brennan," with 100 days to go until the midterm elections, Democrats have revived a tax and spending package and hope voters will reward them if it passes. Plus, Minneapolis Federal Reserve President Neel Kashkari and the new CBS News Battleground Tracker.