applying GC for parents in US

apnooc

New Member
Can a US citizen apply for GC for his parents who are currently visiting US on tourist visa?
1. Can a petition be filed while they are in US? Do they have to get out of US?
2. Are their any advantages to filing while they are in US or is it better to file if they are in their home country?
3. Can they visit US on tourist visa while the petition is pending?
Thanks for the response.
 
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