It is more likely due to the combination of renouncing citizenship. running an offshore tax shelter business, and keeping citizenship in 2 different countries.
I know many people with dual citizenships. My wife loves her country, but got US citizenship so she could get a decent job here in the states. Running businesses overseas is not a crime. In fact many people run businesses in places like Puerto Rico for their tax benefits. Nothing wrong with that. this isnt the bible and the eye of the needle story here, so Id say Rogers yearly tax bill alone will be larger than 99% of the average Americans lifetime of taxes. That alone should give Roger a free pass to travel in the states.
The real prob is the absolute idiots running Homeland Security, ISCIS, Immigration, etc. Whatever new name our politricksters like to call it after the previous ones F something up. I dealt with them when bringing my wife to the states. Downtown Los Angeles. I got a letter saying my wife was to immediately report to Dept Homeland Security and get ready to be deported. We filed our immigration papers properly, sent them in properly and the government screwed up some of our paperwork. They were in the wrong. We headed to downtown to speak with whomever we could. Waited in line 3 hours to get in (funny how we were the only ones who spoke english, dont we have any standards anymore?) then waited another hour to reach the front desk. The large lady behind the counter with her beautiful long nails, immaculate hair style had no care for anyone in the whole building except herself. We showed her the proof that the government screwed everything up and I wanted her to fix it. She said "all this looks gooood to meee. I dont see what the problem is. looks like you done screwed up." I have no idea how these people working for the government get their jobs. Absolutely ridiculous. She refused to say the government was at fault and she threatened to have us arrested for asking to speak with her supervisor. We called our local state representative and he listened to us and promised everything would be fine. We had our case expedited and instead of waiting months, we came back in a week for an interview and found out that lady that helped us had since been fired.
In Rogers case, if he had an educated person behind the desk helping him, if that person spoke to others in the building and just looked at the docs, Roger would have been fine to enter. The people they look for are the ones with zero connections to home and become a flight risk to stay in the US and become a financial burden on the state. Roger is none of those.
This was a political move against Roger no doubt about it.