For years Kamala Harris faced criticism that she was not up to the job of being a heartbeat away from the US presidency. Now, she finds herself feted by Democrats as their best hope to stop Donald Trump's comeback. After Biden dropped out of the presidential race, Kamala Harris finds herself suddenly on the cusp of history. If elected, Harris would break one of the highest glass ceilings left for women in the United States -- that of occupying the country's top office. Can she shatter the White House glass ceiling? Palki Sharma tells you.