This may surprise you to hear, but the United States has invested almost nothing in Internet infrastructure. There was initial funding for the research that led to the invention of the Internet. That was very generous research funding given to scientists. However, in terms of infrastructure programs, the answer has been almost zero. That's one of the reasons the phone companies and cable companies say, “Why should we listen to these rules? This is our network.” On the other hand, even when the United States does subsidize things, companies still say that they have the right do what they like, so I'm not sure. However, there has been almost no investment in infrastructure in the United States by the government.
On February 15th, 2018. See this statement in context.