It's just a distraction. Trump doesn't really care about drugs, and he only barely cares about immigrants because he's racist. (If he really cared about drugs, he'd be more concerned about the enormous amount of drugs going from the US -> Canada, instead of harping on the tiny fraction that goes the other way...)
And a regime change has historically only worked out very rarely from what I can tell, while it has blown up or caused decades of chaos and misery numerous times.
Even at the very best, when executed with care and precision (neither of which are Trump qualities), it is still a foreign country meddling in your politics. And if the new government becomes less popular, it is perceived as a puppet of the foreign country, and the blame for all things going wrong fall on that country for installing it.
And as sporkman points out, that goes for the people who support your revolutionary aid. A large fraction of the population is going to be outright opposed to it.
And a regime change has historically only worked out very rarely from what I can tell, while it has blown up or caused decades of chaos and misery numerous times.
Even at the very best, when executed with care and precision (neither of which are Trump qualities), it is still a foreign country meddling in your politics. And if the new government becomes less popular, it is perceived as a puppet of the foreign country, and the blame for all things going wrong fall on that country for installing it.
And as sporkman points out, that goes for the people who support your revolutionary aid. A large fraction of the population is going to be outright opposed to it.