Countries that do not allow Ex-convicts
What countries do not allow ex-convicts to enter through their customs despite having a valid USA passport? I have heard some countries like Cananda will not let you in their country despite being off parole or probation. Is there a website or listing of countries that will not allow me to travel to their homeland? So far, I have travelled to South America with no problems, but now family wants me to travel to Europe, Thailand, and so forth. So, I would like to know this before spending money on travel.
Thanks