Prior thread It's proposed legislation; the method is not currently available and there is no assurance that it ever will be. Patience.
Personally, I think it will do nothing more that expand the compliance risk banks assume when they use exemptions. CTR filing requirements should be flushed. Cash activity is either suspicious or it isn't.
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In this world you must be oh so smart or oh so pleasant. Well, for years I was smart. I recommend pleasant.