A year after Guaido's rise, Venezuelans wait for change

Venezuela is in political, economic and humanitarian crisis. With its massive oil reserves, it used to be among the world’s wealthiest countries, but its economy has since collapsed. For residents opposed to the socialist regime of President Nicolas Maduro, the 2019 rise of opposition leader Juan Guaido offered a moment of hope that has yet to deliver. Special correspondent Marcia Biggs reports.