Senate Majority Leader Mitch McConnell (R‑KY) responded to the sudden death of Supreme Court Justice Antonin Scalia with a press release saying, “this vacancy should not be filled until we have a new President.” Republican presidential candidates Ben Carson, Sen. Ted Cruz (TX), and Sen. Marco Rubio (FL) agree. Hillary Clinton spoke for many Democrats: “The Republicans in the Senate and on the campaign trail who are calling for Justice Scalia’s seat to remain vacant dishonor the Constitution. The Senate has a constitutional responsibly here that it cannot abdicate for partisan political reasons.” Conor Friedersdorf says the no-vote stratagem is “illegitimate” because “the Senate does have an obligation to fulfill its ‘advice and consent’ obligation.…A preemptive rejection of any possible Supreme Court appointment is self-evidently in conflict with that obligation.” Clinton and Friedersdorf are wrong. Senators have every right to advocate not holding a vote on an Obama appointment, and not to hold a vote.

Clinton and Friedersdorf are overlooking the “consent” part of “advice and consent.” Consent means the Senate is under no obligation whatsoever even to hold a vote on any presidential appointment. The Senate’s obligation is to do what the Senate wants, and only what the Senate wants. Those are the rules. To try to hold senators to a different rule is to try to change the rules on them–and people tend to resent that. Everyone is free to disagree with the positions individual senators or the Senate as a whole take on individual nominations or prospective nominations. But there is no question that senators individually or collectively can deny their consent to any actual or prospective nomination for any reason–just as the American people can vote for whomever they want, for whatever reason they want.

Indeed, President Obama isn’t even entitled to nominate a replacement for Justice Scalia–or at least, Congress can deny him that right. The Constitution gives Congress the power to decide how many seats there are on the Supreme Court. In 1789, there were only six. Given sufficient congressional support (i.e., veto-proof majorities in both chambers), Congress could reduce the number of Supreme Court justices from the current nine to eight. McConnell, Cruz, and Rubio could propose doing so right now. It seems strange to criticize senators who are merely expressing in what circumstances they will withhold their consent when Congress has the power to deny the president the ability to fill this vacancy entirely by itself eliminating this vacancy.

At the same time Democrats turn a blind eye to President Obama repeatedly ignoring constitutional limits on his power, they claim Republicans would dishonor the Constitution if they use powers the Constitution clearly grants them. That is unlikely to dissuade Senate Republicans from delaying a vote on Scalia’s successor until 2017. Nor should it. For more on this topic, please read this by my colleague Ilya Shapiro at Forbes.

Scalia’s untimely passing was a gut punch. I didn’t agree with him all the time. But I agree with Trevor Burrus about him. RIP.