Either I'm wrong, or reality is unpopular on HN. It doesn't take much to google for the TIC data[1]. You really do finance this stuff. Average net purchases represent nearly 30% of the US Government's budget. The USG would have to curtail its programs by about this much if you didn't consistently buy our toilet paper.

[1] http://www.treasury.gov/resource-center/data-chart-center/ti...