Visas and pensions

My wife and I are thinking about moving to Vietnam. She is Vietnamese but got US citizenship. Can we get visa for more than 3 months? Also can I get social security and Federal pension living there?

If your wife is Vietnamese extraction she can reclaim her Vietnamese citizenship, because Vietnam now recognises dual citizenship.   Then she can get a Vietnamese passport and will not need a visa. She will be able to sponsor your for a visa exemption.  She should enquire at the Vietnamese embassy or nearest consulate.

Le me google that for you:    "social security check vietnam"

ssa.gov/multilanguage/10146-GM.pdf
aarp.org/work/social-security/info-12-2011/receiving-social-security-benefits-living-overseas.html

search those articles for 'vietnam'

Also, search this website for many discussions

Easiest: auto-deposit to US bank, use atms here

Also, search this website for many discussions

Many , Many discussions. Here's one to start with:

https://www.expat.com/forum/viewtopic.php?id=313223

The information in the thread is fairly current except for one point, instead of the monthly trips to  the Consulate, its now every three months.