Entitlement spending is so high that it almost acts like a UBI.

http://thf_media.s3.amazonaws.com/infographics/2014/12/CP-Fe...

The lowest quintile of households have a negative effective tax rate.http://krusekronicle.typepad.com/kruse_kronicle/images/2008/...

A UBI without preconditions would just compound existing spending.