I understand but at what point is talk effective if it doesn't materialize into action. To be frank I would rather see Trump stop this invasion at the border than being anywhere right now. His job is to stop invasions. Check your Constitution.
And I would add...Surely you understand that Trump taking action on this important issue will do more to assure a Republican win than any rally in any state.
To be honest you sound like you just wanna bellyache.
The caravan is not here yet. Its still down on the southern Mexican border. Trump has threatened and cajoled Mexico and central American countries and they appear to be acting on his threats. He's done far far more to help the matter than any modern republican politician in my memory.
Besides, images of US soldiers standing port arms in front of mothers with babies just prior to election day wouldn't be helpful IMO. After election day would be better, doncha think?
BTW he can be at a campaign rally and doing his constitutional due diligence concurrently.