Two problems (among others) Fred:
1. The electoral college confines the damage of fraud to a local area. For instance, if unions are packing the ballot boxes in Chicago, the most damage they can do is to the Illinois electoral vote. But under this plan, if they can control Chicago ballot boxes, they can control the nation.
2. This is just a precursor to a federal voting rights standard. Right now, your state can check voter IDs or ban violent felons from voting, etc. If this electoral college override scheme is implemented, you can bet the ACLU will quickly file suit to require “uniform national” voting laws.
One more blow to the federal republic.
The Founding Fathers in the U.S. Constitution permit states to conduct elections in varied ways. The National Popular Vote compact is patterned directly after existing federal law and preserves state control of elections.