Yes and no. The constitution gives original jurisdiction on some issues to the Supreme Court and on any other legal matters the scope of the court’s jurisdiction is up to Congress (with the President signing on). Congress can create inferior courts to help out, and define their jurisdiction. That is what it did. It now needs to take away jurisdiction of some matters, and expand the appellate courts with dozens of new judges (split the 9th, for starters).
Subject to the jurisdictional descriptions in Article III and the 11th amendment, sure.
And a Congressional grant or congressional restriction is itself reviewable.