President Obama was at the center of an anthrax scare after white powder was mailed to his offices in Washington. The letter, mailed from Hong Kong, reportedly contained baby powder. The scare comes on the heels of a similar alert involving President Trump's daughter-in-law in New York Monday. Vanessa Trump, wife of Donald Trump Jr., was hospitalized after a letter was mailed to her mother’s Upper East Side residence addressed to the president’s oldest son. It was postmarked from Boston.