The NLRB election rules set to take effect on April 14th face a court challenge by U.S. Chamber of Commerce and now face a potential legislative challenge as well.  The Senate passed a resolution designed to block the NLRB's implementation of the new rules.  A similar measure is expected to be considered in the House in the next week or two.  There is no guarantee that these legislative efforts will have an impact on the NLRB election rules.  With just a month or so to go until implementation employers should stay tuned to see if any of the challenges are able to derail the rule.