I have not yet seen the scenario of a tourist needing to obtain emergency health care. I have seen the default going towards immigrants in this thread.
Unfortunately (or maybe fortunately for this argument), I do not live in a high-tourist location, so I cannot comment from personal experience. However, if a person were vacationing in a place where they did not speak the language (i.e. if I were visiting Greece, or any of the hundreds of countries where I do not speak the language), would they pay for me to have an interpreter if I were to need medical care while in their jurisdiction? If not, then why should I (the taxpayer) pay for someone not of this country to have an interpreter if they are to need one?
The most probable situation goes as such: if I were to travel abroad, need medical care, and not speak the language, one of a very few things would happen.
1. I would have someone with me who could translate, because I would not be stupid enough to go to a foreign country where I did not speak the language without someone who natively speaks the language, or at least fluently enough to get around.
2. In the case that my friend (or hired interpreter, if that is who I have in scenario #1) is killed/incapacitated in the accident that causes me to need medical care (or is otherwise unavailable for whatever reason), perhaps someone at the medical facility to which I present would speak my language and be available to translate, most likely at my expense for their services.
3. Someone would be hired by the hospital on my behalf to translate (i.e. language line, etc), the cost of which would most likely be passed on to me through my bill.
4. Noone would be available and I would get less than optimal care and possibly die.
Note, this would all be avoided if either I spoke the native language or had someone with me to translate, with no added cost to the hospital or their society in general.
Now, #2 or #3 would work in this country, in a limited capacity, if hospitals and physicians could pass the cost of interpreters on to the patient or patient's insurance. The cold hard truth is, however, that we cannot. Our payments are decided based on DRGs and services rendered, not on an itemized basis. If an insurance carrier (or medicare/medicaid) decides they are going to pay xxx amount, that xxx amount must cover all required services for that diagnosis. Interpreting services are not included in this number, believe you me.
To top it all off, California has now outlawed Balanced billing (appeals pending), which means that physicians and hospitals cannot bill the patient directly for any part of their bill their insurance carrier decides not to cover. We just have to be happy with whatever bit of chump change they decide to offer us. Again, declining payments do not encourage offering more services that have to come out of our pockets.
Long post to say one thing: if you travel abroad (or move to a country where you do not speak the language), it should not be the responsibility of the society in which you now reside to offer you services. You should pony up and bring those services to the table yourself or be prepared to pay for them when that society has to obtain them for you.