I am all for California and New York doing it.
I'd like to see a discussion of the National Popular Vote movement relative to Article IV Section 4:
The United States shall guarantee to every State in this Union a Republican Form of Government...According to Wikipedia:
This clause, sometimes referred to as the Guarantee Clause, has long been at the fore-front of the debate about the rights of citizens vis-à-vis the government. The Guarantee Clause mandates that all U.S. states must be grounded in republican principles such as the consent of the governed. By ensuring that all states must have the same basic republican philosophy the Guarantee Clause is one of several portions of the Constitution which mandates symmetric federalism between the states. ...The Federalist Papers also give us some insight as to the intent of the Founders. A republican form of government is distinguished from a direct democracy, which the Founding Fathers had no intentions of entering. As James Madison wrote in Federalist No. 10, "Hence it is that such democracies have ever been spectacles of turbulence and contention; have ever been found incompatible with personal security or the rights of property; and have in general been as short in their lives as they have been violent in their deaths."
The National Popular Vote movement certainly creates an asymmetric federalism between the states by having half the country's states voting separately while the other half votes as a direct democracy bloc.
Even if Congress accepted the National Popular Vote compact, wouldn't it still be a violation of Article IV Section 4?
-PJ