[Doe Eyes]

No, foreign citizens in our country are subject to US jurisdicition, just like any citizen. They are required to obey our laws and can be punished for any violatoins just like us. Even if they are here illegally.

Correct. The only foreign citizens not subject to US jurisdiction are diplomats, for whom this distinction is intended.

[MHGinTN]

Bingo! It does appear that the ‘and subject to the jurisdiction thereof’ was meant to distinguish the diplomatic corps case as the exception thus defining the general rule of thumb for all others.