I don't believe in free healthcare for migrants, but I believe that with integrity

You see this child:

Lets say this child comes to the US with their parents, doesn't have papers, and gets sick enough to where they will go in the hospital and one of the 2 following things will happen:

I am willing to prefer option 2 to option 1 because my tax dollars matter more to me than the life of a stranger child (this applies to all children regardless of citizenship status).  I don't care if the child looks like this, or this or this.  I do not want my tax dollars going to take care of other people's kids; my tax cuts matter to me more than their lives, so I am literally willing to look at these poor desperate kids and turn them away and let them die.

If you select option 1 and you are on the left, then I respect that; I really do.  You believe unwanted pain should be reduced, so you logically from your brain patterns would pick option 1 and I don't agree; but I can respect it.  But most conservatives and libertarians don't have the integrity to say what I said because they are afraid of looking unpopular to normie America, who doesn't care how much it costs; they don't like seeing children suffer, so they would tolerate the tax hikes they don't notice to save more people.  At least the leftist is honest; I can respect that.  But most of the conservatives and libertarians aren't honest.  Conservatives and libertarians should pick an option and I don't care with what option they pick; but if they don't pick option 2; then they should leave the party; no hurt feelings towards them; you can pick option 1 and I won't be upset; but just be honest.

Then your subject line is wrong here. Migrant status is immaterial to your position: your dollar is more important to you than a kid you don't know, full stop. 

I am not a fan of free healthcare, because people abuse it.

Sure, this example sounds simple, but when applied on mass scale, it causes even more poverty, and thus more crime.

US government already pays 2 trillions for healthcare, which is insane cost.

You could have built additional 3 US militaries with that money.

You could have solved all poverty in USA with that money.

Government healthcare is probably the least cost effective government program in history.

Yes; this is just libertarian/fiscal conservatism ideology.  I just have enough honesty to admit it; although if you prefer the left wing belief, that's fine.  Think that's too cruel?  Then donate your money to an orphaniche.

How would people abuse healthcare?

Both doctors and patients are known for abusing free healthcare.

Patients go to doctor much more often than they normally would, driving prices up and creating long waiting lines.

Doctors agree to many unnecessary procedures because government pays their costs and government often pays per procedure.

There was even a case of a dentist intentionally lying to patients and pulling much more teeth than necessary because government payed him per pulled tooth.

So you don't like patients taking good care of their health?

If the taxpayer pays for UHC, this is irrelevant.

Then you hire more doctors.

Then he should lose his lisence.

Not if it as a result doubles all  prices on market.

But in the EU; it's about half.

People that live in countries with UHC don't go to the doctor's every day; they may go 3x a year (whereas now, people may go 2x a year if they have healthcare, 0x a year if they don't).