For the second time, a bill to bolster the nation's cybersecurity has failed to pass in the Senate, with senators voting 51-47 against Sen. Joe Lieberman's Cybersecurity Act. Republicans opposed the measure, which would have created voluntary standards for companies involved in critical industries, saying it represented a slippery slope to additional government regulation. Observers say the bill's death makes it that much more likely that President Barack Obama will act unilaterally to strengthen cybersecurity through an executive order.