The real problem is that one party controls the entire government at the civil servant level. One way to reduce that problem would be to move the government out of Washington.
Another way is to dramatically shrink the size and scope of the federal government. It keeps growing ever larger and with that growth so do the ever increasing opportunities for corruption, graft and partsian manipulation.
Government is way too big and concentrated in one place. Neither is healthy for a democracy (which has inexorably morphed into the corruptocracy that we now are).