If it was "mostly" the Democrats that engaged in such criminal behavior, one would think that the Republicans would be all too happy to investigate. They are not investigating. In fact, one could say they are taking an active role in stuffing it all under the rug.
Remember Chinagate? Remember John Huang being charged with HUNDREDS of counts of contempt? Remember the REPUBLICANS that were involved with Chinese money? Remember a certain Republican Senator giving Chinese money back to the donor?
An Irresponsible Congress