President Obama picked up the phone today and made a couple of important calls.

One of them went to Senate Majority Leader Mitch McConnell; the other went to Senate Judiciary Committee Chairman Charles Grassley. Both men are Republicans. The president is a Democrat.

The president informed the senators he intends to make a pick for the U.S. Supreme Court. And, according to White House press secretary Josh Earnest, Sens. McConnell and Grassley both voted in favor of President Reagan’s “lame duck” selection of Anthony Kennedy to join the court in 1988, which was just as much of an election year as 2016.

McConnell, though, says the current president should notpick the next justice. That task belongs to the next president, he said.

What has changed?

It’s the balance of the court. It means everything. Every single thing.

You see, the late Justice Antonin Scalia, the man Obama wants to replace, was a conservative stalwart on the court. The president is not a conservative; therefore, his appointee won’t echo the judicial philosophy of Justice Scalia.

The next justice — if he or she is approved by the current Senate before the end of this year — is likely to change the fundamental balance of the court, which has comprised a thin conservative majority.

Senate Republicans don’t want the court balance to change. They’ll do whatever they can to prevent the president from making the pick.

There’s just this one little issue that, by my way of thinking, should matter more than anything else. The Constitution grants the president the authority to make the appointment, which this president said he’s going to do. It also grants the Senate the authority to vote whether to approve or deny the appointment. It doesn’t require the Senate to act.

If the Republican-controlled Senate is going to stymie the president, then it faces a serious charge of obstruction. Senate Republicans keep denying the obstructionist label.

A failure, though, to act in a timely fashion on this appointment gives even the casual observer ample cause to suggest that, by golly, we have just witnessed a case of political obstruction.

If the president selects someone who is eminently qualified and who has a proven record of judicial moderation — which conservatives still will see a serious break with the conservative judicial record built by the late Justice Scalia — then shouldn’t the Senate give that nominee a fair hearing and a timely vote?

I would say “yes.” Without equivocation.