A congressional bill under review in Connecticut is meant to reduce the instances in which an insurer can refuse to cover pre-existing conditions. Under the bill, a person changing health plans could be subject to a three-month waiting period under the new plan for coverage of pre-existing health problems, instead of 12 months under current federal law. An insurer can also only look back at 30 days of a person's health record to determine whether there are pre-existing conditions subject to the waiting period, instead of the current six-month "look-back" period that is allowed.