Clarifying for the non-lawyers:
A HEMS trust is one that can only be used to pay for the trust beneficiaries’ Health, Education, Maintenance and Support. Non-qualifying creditors can’t touch it. (As I recall, not even in bankruptcy proceedings.)
So, HEMS funds can be used to pay for things like food, clothing, housing, vehicles, medical supplies & services, and tuition, but not bitcoin, business partnerships, and other “risky” ventures.
Nothing is foolproof, of course. HEMS trusts can be depleted by unwise choices, too. A 1 room efficiency apartment and a mega mansion are both “housing”; a used Ford Fiesta and a new Ferrari are both “vehicles”.