Permanent Resident must have and be able tpo prove an intention to reside mostly in the USA and make the USA its home country. Without that intention, the status would be considered abandoned, precisely the scenario you have described. That applies to Conditional Permanent Residents too.
For more information please visit:
http://myattorneyusa.com/immigration-law-and-practice/immigration-to-the-usa/adjustment-of-immigration-status/seeking-waiver-of-joint-filing-requirement-of-uscis-from-i-751
Answered on Aug 25th, 2015 at 3:59 PM