Isn’t one of the states that voted to give their electoral votes to the popular vote winner? Sounds they’re making the like argument for the EC.
I don’t think that “interstate compact” would pass Constitutional muster. There’s never been a situation where a state would potentially cast their EVs for the candidate who lost the state.
Just for shiggles, I’d hope Trump wins the popular vote (despite the voter fraud in CA which delivered it nationally to Hillary) so that the states that vote Dem have to cast their EVs for him. You’d see a swift scramble with the Dems going to judges to get an injunction against the compact saying it “disenfranchised” the majority of voters, along with pressuring the Electors to vote for the Dem candidate.