The liberal replies are instructive. We get every excuse from the myth that Republicans have "defunded education" and "job training" to the claim that Republicans have not supported "infrastructure," and we also see many hands-over-eyes denials about the economic facts documented in the OP.
We have thrown hundreds of billions of dollars at supposed "infrastructure" under Obama. Remember the 2009 "stimulus" bill, a sizable chunk of which was for "infrastructure"? Yeah, it turned out that a lot of those supposedly "shovel-ready projects" were not really "shovel-ready" at all, and that a lot of them were of dubious value. So with all this spending on "infrastructure," why is the economy performing so poorly? Why has Obama's recovery been the weakest in modern history? Why has his "recovery" included two entire quarters of negative GDP growth?