Du Bois argued that in tacitly accepting legal segregation and disfranchisement, African Americans could never make progress in civil rights. He also bemoaned that Washington's popularity in the white community marginalized other strategies towards racial harmony.
Each state only had one vote in Congress, regardless of size. Congress had not have the power to tax. Congress did not have the power to regulate foreign and interstate commerce. There was no executive branch to enforce any acts passed by Congress.