Even including the internment camps, the US still has the largest per-capita prison population in the world.
The UK has, for many years, had the most extensive physical surveillance system in the world, with the NSA having one of the more extensive digital surveillance systems.[1]
The Department of Defense employs 3.2 million people, 2.2 million of which are military (Active and otherwise). US police forces employ another 1 million. [2]
In contrast, China has ~1.6 million police officers (In a country four times more populous then the US), and ~2.3 million people in the military (Active and otherwise). There's probably a million or so of hanger-on people working in various administrative roles - but with China - who really knows?
The United States has been at war with enemies, internal, and external, for most of its existence. It is, as of Q1, 2019, fighting a few shooting wars against external enemies (Syrians, Iraqis, Afghanis), and non-shooting wars against a larger number of other external enemies, as well as internal ones (African Americans, illegal immigrants, and, of course, working class people of all stripes.)
If anything, the list of reasons you've given are the bullet points for why the American empire, as it exists today, is unsustainable, and is about to fall apart under its own weight. [3]
[1] Both, of course, are irrelevant budgetary rounding errors. So is the GFC.
[2] If you've ever turned on the radio - or the television, have you ever noticed how many businesses specifically advertise, or cater to veterans, and their extended families? That's because nearly everyone in the US is, at most, two steps removed from an active, or former soldier. You don't see those kinds of advertisements in countries that don't have an over-sized military.
[3] In reality, it can probably continue on its trajectory for another two decades, or so. All of these bullet points were true in 1999, after all.