Yes you can, people are people, government assistance or not. Work needs to get done and immigrants work very hard.
The same stupid arguments you are making now were made against those same immigrants you praise from the past. You are just a propagandized thinker, just like the Know Nothings of the 1850's or the anti-immigrants of the 1920's You are the same as those people.
It's pretty simple, if you have enough workers, prices are lower, productivity higher and more economic opportunities open up for everyone. Your little bigoted view of immigrants is bad for America.
Here's a conservative source that just spells out the basic economics facts:
https://www.bushcenter.org/catalyst/north-american-century/benefits-of-immigration-outweigh-costs
Immigration fuels the economy. When immigrants enter the labor force, they increase the productive capacity of the economy and raise GDP. Their incomes rise, but so do those of natives. It’s a phenomenon dubbed the “immigration surplus,” and while a small share of additional GDP accrues to natives — typically 0.2 to 0.4 percent — it still amounts to $36 to $72 billion per year.
In addition to the immigration surplus, immigrants grease the wheels of the labor market by flowing into industries and areas where there is a relative need for workers — where bottlenecks or shortages might otherwise damp growth.