cave you called them your ancestors, when you said whatever they did, it wasn't your responsibility. If they and their oh-so-laudable XIXthC liberal immigrant buds were content as peaches with the laws they found, wouldn't those laws still be in place, Family Compact, Stamp Act (for US readers) or The Great Law of Peace?
But my OED makes no mention of your "limited government" variety of XIXthC liberal; instead in every one of the various meanings of liberal—especially the political— it emphasizes openness to change and reform. No Food Stamps, no MedicAid for sure (except we've never had those things in Canada) But wasn't it Bentham, an early XIXthC liberal, if I'm remembering properly, who said: "from each according to his ability to pay; to each according to his need"? So maybe those old liberals deserve some of the modern tar you're slinging. Best we trust the dictionary, rather than your definition, I think. Besides, I thought you described our society as "liberal"—but surely not in the sense you detailed.
Just how do we change and progress then, if dissatisfaction is grounds for deportation? And why do natives—such as corporate legal counsel who insist binding 3d party arbitration without recourse to the courts shall be the only dispute resolution under the contracts they draft and I "freely" enter into[inserts m-dash, gasping for breath]—why do they escape exile, a fine XIXth C punishment for such dissidence and disloyalty to the Crown?
Sorry. I always was taught, and still think "do unto others as you would have them do unto you" is the principle to live by. Please note that it asks nothing you cannot do, like make others behave to you as you want to behave towards them. That's damn hard, if it's possible at all.
The right response to the current sharia story is all within your power. And ours, unlike stemming the human tide that always flows from want to plenty. That tide has been part of civilization since before Roman Senators debated whether those Germans could really be loyal citizens, if they kept those wack haircuts, and weird gods. If Rome had insisted on race-purity—I know, not your idea at all, but relevant—the empire would have collapsed centuries earlier, if it ever even got out of Italy. Co-opt lasts way longer than conquer. Which might explain the collapse of the initially liberal and successful Islamic Empire that gave us the Renaissance, and which then turned repressive. So Columbus' Queen Isabella re-took Spain, and tossed the Moors out, along with the Jews for good measure. Ushering in the wildly successful Spanish World Rule we all recall.
Sorry, I do go on. Now just in case I accidentally changed the subject in my ramble. Do we agree 'security' issues and conquering are not what we're about here? Didn't mean to allow them to sneak in. Sorry if they did.