Does it need assent from the governments of the member states?

Donald Grump is having another hissyfit.

Don’t Mister President Lula, let the free market have it’s way with the US.

If <400 million Americans each got 20 meters x 20 meters of land for housing, that would be:

160 billion square meters of land,

or 16 million hectares (≈ 39.52 million acres),

or 160 000 sq km (<62 000 sq miles)

or less than 80% the size of Utah.

i.e. Trump announces a another 25% nation-wide sales tax on American consumers.