The latest “YouGov” polling reveals that Americans view the “Signal Scandal” as more serious than both Donald Trump’s classified documents case and Hillary Clinton’s email controversy. Nearly 74% of Americans consider the leak either “somewhat” or “very” serious, including 60% of Republicans. MSNBC’s Jen Psaki reports and is joined by veteran DC correspondent John Harwood. (The Beat’s YouTube playlist: https://msnbc.com/ari Ari: / arimelber Beat merch: www.msnbc.com/Beat5)