Personal finance expert Dave Ramsey said examining what happened in the 1970s reveals why Vice President Kamala Harris's economic plan is flawed.<br /><br />Appearing on "The Ingraham Angle," Ramsey noted that widespread price controls at the time were an attempt to curb rampant inflation.<br /><br />"It's not sustainable because it's artificial," Ramsey said. "It's been tried. It does not work."