A better prospect, it seems to me, would be to exempt entirely the business-purposed movement of capital, if remitted from an N.A. bank.
The reason this specific situation is of enormous concern is that, if one is not VERY careful, one winds up with a de facto ''Tobin Tax'', so-called after the academic airhead (and, not coincidentally I'm sure, Nobel economics prize winner) who has advocated a worldwide tax on capital movement for decades. That such a tax will instantly lead to gigantic amounts of evasion on the part of corporations, far more sophisticated about capital usage than are governments (duh!), simply eludes him.
The net effect of a tax like this being implemented is to increase, very sizeably, the proportion of the economy that is or goes 'underground'. NOT a good idea at all.
Or, perhaps, one might only levy the tax on remittances under, say, $5000, which would surely nail all the illegal alien remittances out of the country. This type of limit, though, has a bad history. Sooner or later, the vermin in the Regress will keep raising and raising and raising the limit. Ultimately, although it would certainly take some few years, legitimate business capital movement would get caught up in this scheme, too.
Thanks for the erudite input. Now, keep in mind that this is a new day-—if the Con(Re)gress tried any of these con games re illegal aliens, the internet (that’s we, the people) would be on fire in opposition.