Law enforcement officials are looking for the person or people who sent a poison-filled package to US President Donald Trump.<br />According to Newser, the package never even made it as far as the White House mailroom. It was flagged at an off-site sorting facility.<br />The package contained ricin. It's a toxic compound made from castor beans that can be fatal if inhaled or ingested.<br />Ricin has appeared in political terror schemes before, in the US and elsewhere.<br />In one episode, four Georgia men sent it to officials in several US cities. In another, a Mississippi man mailed ricin-laced letters to former President Obama.
