Final answer:
The FSIP is authorized to take action to resolve negotiations impasses, making the statement false. Also, during the ratification debates, Antifederalists were opposed to the Federalists' views, which makes the assertion about them being the same also false.
Step-by-step explanation:
The statement regarding the Federal Service Impasse Panel (FSIP) is false. The FSIP indeed investigates any negotiation impasse that is presented to it; however, it is also authorized to take action to settle the dispute. The FSIP may recommend procedures or actions to resolve the impasse and, if the parties do not reach an agreement, the FSIP has the authority to make decisions binding on both parties.
As for the historical assertion about the Antifederalists being really Federalists, that statement is false. During the ratification debates of the United States Constitution, the Federalists were those who supported the new Constitution, which proposed a stronger federal government. The Antifederalists, on the other hand, were opposed to the new Constitution, fearing that the increased power of the federal government would be a threat to individual liberties and states' rights. These were two distinct and opposing groups.