This is a Tweet that Mark Levin put out. Is this what you are talking about?
"REMINDER TO THE REPUBLICAN STATE LEGISLATURES, YOU HAVE THE FINAL SAY OVER THE CHOOSING OF ELECTORS, NOT ANY BOARD OF ELECTIONS, SECRETARY OF STATE, GOVERNOR, OR EVEN COURT. YOU HAVE THE FINAL SAY -- ARTICLE II OF THE FED CONSTITUTION. SO, GET READY TO DO YOUR CONSTITUTIONAL DUTY"
Yes they could have done that in the hopes they would have chose electors that would vote for Trump. So many states are NOW adopting laws that makes it so electors can ONLY vote for the person the state voted for.