An interesting idea, although I think the US is actually ahead of the curve on mines. From Wikipedia:
>> Opponents point out that the Ottawa Convention places no restriction whatsoever on anti-vehicle mines which kill civilians on tractors, on school buses, etc. The position of the United States is that the inhumane nature of landmines stems not from whether they are anti-personnel as opposed to antivehicle but from their persistence. The United States has unilaterally committed to never using persistent landmines of any kind, whether anti-personnel or anti-vehicle, which they say is a more comprehensive humanitarian measure than the Ottawa Convention. All US landmines now self-destruct in two days or less, in most cases four hours. While the self-destruct mechanism has never failed in more than 65,000 random tests, if self-destruct were to fail the mine will self-deactivate because its battery will run down in two weeks or less. That compares with persistent anti-vehicle mines which remain lethal for about 30 years and are legal under the Ottawa Convention.
[1] https://en.wikipedia.org/wiki/Ottawa_Treaty