Here's the problem with merit based immigration (IMHO)
If only the best qualified are allowed to immigrate to the US, then they will compete only for the best, highest paying jobs available. Leaving the menial jobs, the low paying jobs, the back breaking jobs, for the native born.
Is that really what we want?
How good are you at picking lettuce?
Spending time on my grandparents farm growing up I picked peas,corn, and tomatos among other's it's not for the out of shape but if I needed a job and someone offered it to me I would do it.
so you are okay with putting the merit based foreign immigrants in the limited ''good jobs'' in America??
Lol. I remember a lot of lefties telling me that I didn't like mass immigration because I was insecure about my abilities and scared that some foreigner was going to take my job, and telling me I had roughly the same reasoning regarding affirmative action (even though I'm a pacific islander and actually stand to benefit from that silly practice). I'm wondering, suddenly, if that accusation wasn't mostly just projection.
Anyway
Where you err in your reasoning is that you haven't considered that most of us who prefer merit based immigration also prefer tightly enforced immigration law coupled with limited numbers and targeted immigrants. Essentially, you take into account the applicant's probable field of vocation when deciding who to admit. If tech companies aren't hiring, you don't flood the market with coders. If there's a notable shortage in say, engineers (you know, like the one the pro-mass-immigration crowd was using as a flagship economic justification throughout most of the Obama years) during that same period, then you give greater weight to applicants in that vocation than you do to applicants whose vocations aren't in high demand.
Please refrain from using loose terminology to reduce your opponents' ideas to a single metric solution. This shit ain't rocket science to begin with, if it still seems like it needs to be further simplified, maybe it ain't the conversation for you.