It's hardly only the republicans blowing government funds on useless programs, Obama's team did the same with bogus 'clean coal' funding funnelled into public-private partnerships with coal outfits (to the tune of ~$8 billion via the DOE), gave loans to the renewable energy companies with the worst products on the market via insider connections (Solyndra), etc. It's an across-the-board problem.

If we really wanted to do large-scale infrastructure projects that were successful, like nationwide high-speed-rail, maybe we should study how China does it.