That’s not very nice
Who cares if it's nice... It's the law. The law isn't meant to be nice, it's meant to uphold the rules and keep order. Letting illegals walk into the country and get free citizenship is disrespectful to all the people who have come before and immigrated to the country legally.
with this exact same line of reasoning you can oppose literally any change at all
we cant get healthcare because it would be insulting to the people who paid for it before
we cant give an 8 hour work week because it would be insulting to people who did 17 before
we cant do x because it would be insulting to people who didnt benefit from x...
Not to mention illegals likely haven't been vaccinated for anything and that puts everybody else at risk of being exposed to diseases that have previously been eradicated in the US. Not saying travelers from abroad couldn't do that, but it still puts us at greater risk.
do you know how many millions of vaccines the us is sitting on right now in freezers