make it so every airline has width requirements on their seats. If you don't meet it, you have to buy another seat.

While on a plane, every single passenger should have the right to be comfortable within their own space without the person next to them making them uncomfortable due to size. This would mean that any airline operating on US Soil would be required to have width requirements on their seats, mandating that someone who can’t fit in a seat would be required to purchase a second seat as to not absorb the space of the seats around them due to width. While wide people will think this is unfair … it’s more unfair to the non-wide people.