"The US" no longer uses anti-personnel mines outside the Korean DMZ (which is actually managed by the South Koreans). The US does not deploy them anywhere, and hasn't for years.
Maybe its India and Pakistan we're thinking of, hm?
Did you really think she/he was suggesting that the US is setting up landmines in Vietnam 50 years after the war?
Landmines can kill people a very long time after being deployed you know...
Do you really think the US government bears no responsibility for the actions of the US government 50 years ago and the consequences today? Would you extend that to other governments too? In what circumstances would you not? What Cut off period do you think is right generally?
For example do you think the US has no responsibility towards Pacific Islanders whose islands are now lethally radioactive due to nuclear tests 50 years ago, and can reasonably wash its hands of any problems arising from that today?
I can't claim to be directly responsible for the actions of my countrymen fifty years ago, but not doing anything about their misdeeds today gives my tacit approval to those past actions and to their ongoing costs so unfairly burdening present-day Vietnamese. Plus, I think it would be a nice bit of diplomacy for the U.S. to fund mine clearing efforts in Vietnam.
Maybe its India and Pakistan we're thinking of, hm?