If you are a US citizen you are the Union. Any state that may, in the future, join the Union would become US citizens.
If you are referring to a workers union then it depends on the constitution of that union. There are several international ones.
No
Have to be a US Citizen and if you have a spouse, they must be a citizen of the US also.
Yes, you do need to be a US citizen
no
A Jamaican can join the US Army if they have a green card or they are a naturalized citizen.
Join the US Armed Forces.
Yes. FBI Agents are peace officers, and in order to be a peace officer in the US, you have to be a citizen of the US.
You have to be a US citizen to join the US marines i think its actually permanent resident
Indiana was admitted into the Union on December 11, 1816 becoming the 19th state to join the union.
BY GOLLY, no!
can a no legal status join the US army???
Illinois was admitted into the Union on December 3, 1818 becoming the 21st state to join the union.