It’s tempting, sometimes, to compromise with the left’s agenda, which is top-down regulation of social and economic relations. The agenda has a huge constituency, after all. Think of the tens of millions of persons who would be harmed in the short run, if not for a long time, if a leftist scheme were undone.

Consider Obamacare, for example. A key provision of Obamacare — the camel’s nose, head, and shoulders in the tent of universal health care (a.k.a., socialized medicine) — is the vast expansion of eligibility for Medicaid. In the 30-some States that have opted to participate in the expanded program, persons with incomes up to 133 percent of the poverty line are eligible, including adults without dependent children.

It would seem that only a Simon Legree or Ebenezer Scrooge would deny Medicaid coverage to those millions who have obtained it by way of Obamacare. Or it would until the following considerations come to mind:

• The poverty line is a misleading metric. It’s a relative measure of income, not an absolute one. Most “poor” persons in today’s America are anything but poor in relation the truly poor of the world, and they live far above a subsistence level. The poverty line is nothing but an arbitrary standard that justifies income redistribution.

• Other persons, with their own problems, are paying for the government’s generous “gift” to the semi-poor. But who is really in a position to say that the problems of Medicaid recipients are more deserving of subsidization than the problems facing those who defray the subsidy?

• If expanded Medicaid coverage were withdrawn, those now covered would be no worse off than they had been before taxpayers were forced to subsidize them.

• Being relatively poor used to be a good reason for a person to work his way up the ladder of success. Perhaps not far up the ladder, but in an upward direction. It meant learning skills — on the job, if necessary — and using those skills to move on to more-demanding and higher-paying jobs. Redistributive measures — Medicaid subsidies, food stamps, extended unemployment benefits, etc. — blunt the incentive to better oneself and, instead, reinforce dependency on government.

I will underscore the last point. The lack of something, if it’s truly important to a person, is an incentive for that person to find a way to afford the something. That’s what my parents’ generation did, even in the depths of the Great Depression, without going on the dole. There’s no reason why later generations can’t do it; it’s merely assumed that they can’t. But lots of people do it. I did it; my children did it; my grandchildren are doing it.

Republicans used to say such things openly and with conviction, before they became afraid of seeming “mean.” Principled conservatives should still be thinking and saying such things. When conservatives compromise their principles because they don’t want to seem “mean,” they are complicit in the country’s march down the road to serfdom — dependency on and obeisance to the central government.

Every advance in the direction of serfdom becomes harder and harder to reverse. The abolition of Social Security, Medicare, and Medicaid is now unthinkable, even though those programs have caused hundreds of millions of Americans to become addicted to government handouts.

And how does government pay for those handouts? In part, it taxes many of the people who receive them. It also pays generous salaries and benefits of the army of drones who administer them. It’s a Ponzi scheme enforced at gunpoint.

The best time — usually the only time — to kill a government program is before it starts. That’s why conservatives shouldn’t compromise.