Here:
“If you spend $200 billion in this economy in additional government infrastructure spending, rebuild bridges, airports and railways, especially if it’s well targeted. This economy is going to go crazy. It’s going to do great.”
Outlays in fiscal 2008 were $2.9825 trillion.
Between 2009 and 2016, outlays for the eight years, beyond that level, have come to $4.86 trillion. $200 billion or even $1 trillion isn't going to amount to doodleysquat if nearly $5 trillion has done nothing.
Cut federal spending and lower the tax rates and see what the people do with the money instead.