The GAO has held that the deadline for offerors to submit proposals need not be extended when an agency issues an amendment to the solicitation, unless the failure to extend adversely affects competition or was a deliberate attempt to exclude an offeror.
In a recent GAO bid protest decision, the GAO rejected the protester’s contention that the agency should have extended the proposal deadline to allow offerors more time to respond to two amendments–which were issued three days and one day, respectively, before the proposal due date.