There are striking similarities, as well as important differences, between the investigations being conducted against American President Donald J. Trump by the US Congress, and Israeli Prime Minister Benjamin Netanyahu, who was just indicted. The most striking similarity is that both are being investigated for actions that their legislatures have not explicitly made criminal. Moreover, no legislature in any country governed by the rule of law would ever enact a general statute criminalizing such conduct. The investigations of these two controversial leaders are based on using general laws that have never previously been deemed to apply to the conduct at...