One of the main problems with presenting DC, is that as the seat of our federal government, it'd very likely be too polarizing as a candidate within the broader IOC membership. which would neutralize any pros the city could have going for it.
Not to mention, the times DC has presented plans, they were way too spread out. They would need to make it a bit more centralized. The high humidity there in the summer is also a factor.
Bottom line, all of these second-tier U.S. cities are virtually non factors, unless of course the international competition was to be Doha-hah, Baku-koo, Havana, Leipzig, Bari, Adelaide & Kazan.