We should be doing that anyway since it’s already above board (i.e. the current administration need not dip into dictator powers to do so).

Death threats and conspiracies against the United States are already illegal, and each should be investigated accordingly. The perpetraitors (see what I did there?) seem to be getting away with it by calling them political beliefs and screech “conservative voices are being silenced!” when confronted on it. I have no idea why (or since exactly when) “political beliefs” became some kind of pseudo protected class (it’s not, AFAIK) that would shield them from legal action.