Yes, we need to probe the Russia collusion probers

Yes, we need to probe the Russia collusion probers:

Attorney General William Barr dared to use the “s” word.
He said in congressional testimony that the Trump campaign had been spied on by the American government. Pressed by incredulous Senate Democrats, he clarified: “I think spying did occur. The question is whether it was adequately predicated.”
“Spying” has a negative connotation, so perhaps “surveilling” would have been the better way to put it. But a key question is indeed whether there was improper surveillance of the campaign, as Barr stated at another point in the hearing.