One of the many laughably embarrassing moments for the Democrats on the Schiff's committee was when Schiff's committee member Rep. Mike Quigley, from the fifth District of Illinois, dealt with the issue head-on and produced this gem: "...countless people have been convicted on hearsay, because the courts have routinely allowed and created needed exceptions to hearsay. Hearsay can be much better evidence than direct, as we have learned in painful instances and it's certainly valid in this instance."
We can imagine that the standards in Illinois and the Schiff committee may be a tad different from those places where due process is observed, but contrary to Rep. Quigley's contention, courts routinely deny hearsay testimony, and most often do not even admit it into evidence.