Ah, a stroll down memory lane.
I lived in Miami during the Castro revolution and recall a few facts.
When Castro was warring from the hills, most of the US backed him. Most of our politicians supported his effort. He proclaimed himself as the savior of Cuba. Small planes were gunrunning from small airstrips around S. Fla. The Feds would occasionally raid one of the strips, but they didn't really have their heart in it.
When Castro overthrew Batista, suddenly his real agenda came out.
The US offered aid to him, he told us to 'go to he**'. He executed hundreds if not thousands. I had several friends that had relatives shot.
Castro basically stuck his thumb in our eye. We haven't forgotten.
When he imported missiles, that was the last straw. Were they ALL removed? I don't think so.
The only way I would consider renewing relations with him is to have a team of inspectors cover every inch of that island looking for offensive weapons.
Now the useful idiots and Castro's lobbyists and agents in the Congress want to prop up Cuba's dying regime at the expense of the American taxpayers hard-earned money.
How convenient we have an up and running base on the island.