What percentage of the US population is comprised of Americans?

The Supreme Court has recognized that all ‘persons’ within the United States, including aliens, whether their presence here is lawful, unlawful, temporary, or permanent come under the protective scope of the Due Process Clause of US law.

Granting protection of US law to all 'persons' within US territory has merit only to high-minded people with strong moral principles. Such people are giving ICE a hard time both in the courts and in the streets to make America great not just for Americans but for everyone.