"Build the wall," chant the Trumplings. "They should follow the rules like I did," whine the immigrants who tolerated the wait, paperwork, and expenses imposed by the government. "Well, the law might be a smidgin unjust, but it's the law," bleat the law-abiding citizens.
No.
There is no crime inherent in travel and trade. Government borders are not analogous to property lines. There is no trespass. Does that mean everything is always hunky-dory? Well, perhaps not.
There are violent black markets with gangs and smugglers who commit violence. But that is the result of perverse incentives created by government, not an inherent flaw of immigration and free trade.
If they become naturalized and vote, might they vote differently from you? Yes, but then, so might someone moving from another pary of "your country," and besides, I reject the premise of democracy and the legitimacy of those running for office anyway.
Might there be religious differences, perhaps even including extremist terrorism? Maybe, but the governments spark terrorism through covert interventions and overt wars. "Legal" terrorism begets "illegal" terrorism. This also creates refugee crises that need not have existed in the first place. Strike the root. Besides, I also support your right to defend yourself, unlike the politicians who want you to rely on their monopoly insecurity forces.
Sure, some may seek welfare benefits, but the root problem is the welfare state that hungers for a dependant class. And you might want to investigate how the welfare system actually works instead of listening to xenophobes.
They aren't going to "take your job." In fact, there is no concrete evidence that immigration is harmful to the economy. Indications invariably suggest the opposite. Economic instability, systemic unemployment/underemployment, falling wages, ballooning prices, etc. can all be traced back to the Federal Reserve and US government fiscal policy. It isn't Pedro from Mexico at fault, it's the chairman of the Federal Reserve and its smug cronies in banking and bureaucracy.
Time to de-ICE. Drop the border charade. Don't falsely collectivise people based on nationalism and prejudice. Try advocating real freedom.
[/rant]