Two U.S. senators on Tuesday introduced legislation that aims to stop the sale of opioids and illicit drugs online by amending a key federal law that protects internet companies - the latest in a series of bills to go after tech's legal immunity. The legislation, titled the 'See Something, Say Something Online Act' and proposed by Democratic Senator Joe Manchin and Republican Senator John Cornyn, requires internet platforms such as Facebook and Alphabet's Google to report suspicious activity online to law enforcement or be held liable for that failure. The bill adds to mounting calls to reform Section 230 of the 1996 Communications Decency Act, which protects internet companies from liability over content posted by users.