The last person who occupied the job of US vice-president ended up the target of a violent mob calling for him to be hanged. Even so, as Donald Trump closes in on the Republican nomination for 2024, there is no shortage of contenders eager to be his deputy. It is safe to assume that Mike Pence, who was Trump’s running mate in 2016 and 2020, will not get the job this time. His refusal to comply with his boss’s demand to overturn the last election caused a permanent rift and made Pence a perceived traitor and target of the January...