I think there is a difference in thinking. China is trying to modernise their economy. It is also trying to integrate the Silk Road economies through infrastructure. By definition this is stimulatory.
What I see the US doing is simple stimulus - tax cuts and monetary stimulus. There are some spending measures but they are not yet focused on building/modernising other than for defence. That will come as Donald Trump has been very consistent in coming back to his list of campaign promises. He did promise infrastructure spending.