Note that most of those crossing the border are not coming illegally. They are turning themselves over to the border patrol and applying for refugee status in accordance with US law. The largest group is coming from Venezuela, where a "Socialist" government destroyed the economy and persecuted political opponents. The distinction between refugees and economic migrants can be blurry.
As a retiree, you should be particularly in favor of increasing immigration. In about 2030, the Social Security trust fund runs out, leaving benefits financed at only 78%. The most pain-free way of increasing revenue is to bring larger numbers of young immigrants. The alternative is increasing taxes (as Biden has proposed) or reducing benefits (as Trump has proposed).
Under current US law, there are only about 1.5 million slots available for legal immigrants, which is clearly insufficient for the needs of our economy. Canada has about twice the US immigration rate, with lower crime and slightly higher standard of living. Increasing legal immigration would reduce the chaos on the border and improve out standard of living.