Actually, the position being advocated, which lurks just below the surface, with OP's redefinition of American Medical Graduate as a US citizen with a MD degree, is that all US citizens with MD degrees and passing test scores should be matched before any non-US candidates, apparently including those who graduated from Harvard as well as any school in their home country. So, while increasing residency slots would certainly help, his bigger issue is using merit as a metric as opposed to citizenship, and not treating Caribbean MDs as equivalent to LCME accredited ones.
Unfortunately, OP is around 4 years too late (apparently this wasn't his issue then!
), because Stephen Miller, Trump and the Republican Congress of 2017 might have actually been receptive to something like this, but, whatever.