In the last world cup, I think FIFA understood they made a bad decision when they let a country like Qatar host the world cup because Qatar spends lots of money and they killed many workers just to build shiny stadiums while in fact, the games we saw from TV are really dirty and that's why I hope to see other countries hosting world cups with more potential instead of countries lie Qatar.
However, this time America can be a great host for the world cup because they hosted the world cup once years ago.
You are aware that the history of the dead workers are just hyped by western media driven by politics? You can just look at the workers in whatever place you want and see their conditions, try to find some informations from Paris Olympic games and how they are treated.. Just to remind you that France criticised badly Qatar but they aren't any better.
For USA, the situation is not any better and getting the challenge to host the World Cup is very courageous although things changed a lot from like 1/4 century to now.
I agree with you about the deaths of construction workers. Just look at the statistics from big construction projects in other countries to see that the media has specifically touched on the subject of the World Cup in Qatar. But I have no doubts that the World Cup will be held at the highest level in America. I am sure that the next World Cup will be one of the best in recent years.