There are tax advantages to being a mere resident instead of a citizen, a CPA informs me:

“Derb—You forgot another key advantage to only having permanent residency versus citizenship – taxes. As a Canadian working in the U.S. as a CPA in tax matters, I have done my research on this.
“The key advantage that citizens have over permanent residents is that citzens have a considerable estate tax exemption while permanent residents don’t. However, if your intention is to not die in the U.S. and not pay taxes on your retirement, then being a permanent resident is the way to go.
“Here is an example that applies to Canadian permanent residents of the U.S. As you know, the U.S taxes its citzens and worldwide residents on world-wide income. If a U.S. citizen wishes to move to let’s say, a tax haven like Bermuda, he must renounce his citizenship first, and still file for ten years, as ‘taxpatriates’ are assumed to be giving up their citizenship for tax avoidance purposes. The rules are similar for permanent residents, with one notable execption: if you are returning to”

[Derb] To WHAT? The darn auto-comment feature on NRO cuts off after some number of characters. This is so annoying I could