Is my partly sister can seize a visa too...and come over here contained by amalgamated states?

i am planning to petition my mom to come here in us but i want my half sister to go w/her age 5,12...ist possible for them to obtain a visa or green card,and how long it takes for my mom to get the visa.
please i need an answer...appreciation
Answers:   
Permanent legal residents can only sponsor a spouse or their own child.

US citizens can sponsor a parent or sibling.

So, it depends on your status. If you are a citizen, sponsoring a sibling is 4th preference and can lift years. Also, their nation of origin can be a factor in determining how long it could take.
Are you a citizen? I believe solely citizens can petition their family.

The time frame depends on what country they would be coming from.


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