I am answering this question seriously, tho I appreciate you may have meant it in a slightly humorous way? Tongue in cheek? I believe the two are very different.. a marriage is a relationship.. where two people agree to work together, generally speaking both parties agreed to marry and went into it with open minds and hopefully open hearts..
Trump was voted in despite very strong opposition to him and his style.. Please remember at this point this is just an observation, and one that is based on reason... so it's not about opinion or anything.. I am just reporting what is observable.. so it isn't at all like a normal marriage... perhaps an arranged marriage? one you can't get out of? or at least not for 4 years :P