Who must receive amendments issued before the established time for receipt of proposals?

The requirement for amendments to be issued before the established time for receipt of proposals dictates that these amendments must be communicated to all parties that received the solicitation. This ensures that every potential offeror has the same information, maintaining fairness and transparency in the competitive bidding process. If amendments were only sent to a select group, such as only the current offerors or just those who submitted questions, it could lead to an uneven playing field where some competitors have access to updated information while others do not. It is vital in procurement practices to keep the process equitable, which is why all parties who received the solicitation must be informed of any changes or amendments. This fosters trust in the procurement process and ensures compliance with regulations governing fair competition.