90%?
I'll be sure to cry a tear for your economy when your rich flee to here.
You think they register companies in the Camen Islands to save chump change?
You're gonna try steal billions MORE than that, you think they'd just accept that so they can call themselves Murican?
You make absolutely no sense in this posting. The Irish have much higher personal tax rates compared to the US. Its rated as the 10th highest in the world. Have the wealthy in Ireland fled to avoid taxes in your land? No.
Ireland kind of sort of benefits from lower corporate tax rates but these lower rates didn't insulate it from the shock felt in the early part of this decade. Also, Ireland's unemployment rate is 9% compared to the US's rate of 5%. So, yeah, headquarters locate there but its not all skittles and beer when corporate tax rates are low with correspondingly high personal rates.
You have a much better social safety net and a more even distribution of wealth in Ireland compared to the US. Minimum wages are also higher in Ireland. This is all that's being asked for by more enlightened people here. The discussion revolves around how to make a sustainable, robust and healthy society, which is something the US does not have. The discussion regarding a livable minimum wage is one avenue toward this.
What you seem to want is the US's fucked up system. Be careful of what you wish for.