You say resolved, because Gore didn’t complain like Trump did. There were plenty of issues to contest concerning the state. Florida’s two separate houses, were party split, but the Florida Supreme Court was held by Democrats. If the VP has the power to simply reject the certified results sent from a state, then Gore would been on solid footing to do the same. The VP simply does not have that power.
Still don't see "certified" in the constitution. If the election ran by a democratic SOS was not ran as prescribed by the legislature, the "certified" results are not constitutional.