One can debate the impact of the Laffer curve at the national level. A lot of entrepreneurs are reluctant to leave the country, so — at the national level — the impact of high taxes and a hostile business environment may be less than you otherwise might expect. But entrepreneurs are much more willing to change states or municipalities, so that impact is much greater at the local level.
The resulting migration statistics are very embarrassing for the progressives. Not too long ago, the Economist ran its cover story about how business is leaving California for Texas in droves.
So when the IRS announced that it will no longer report statistics on taxpayer migration, it’s not hard to guess why.