The reason Pence isn't visible in Trump's campaign is more complex than the simple deduction that Trump doesn't want him there. I've watched Pence standing behind Trump as he was pounding the podium. Pence does not like or respect Donald Trump. He probably is questioning why he ever let himself get talked into running with Trump. He wants out.. and he's just "doing the honorable thing here". He won't be around if Trump is re-elected. Ugh.. what a thought!