Biden is certainly better than trump on some things like with repealing the Muslim ban. He is also worse in some ways such as deporting millions, 3x more than trump, each year.
Illegal border crossings soared in the months after Biden took office and immediately rolled back many Trump-era restrictions. Biden warned that he’d still enforce immigration laws, and he temporarily kept in place a Trump pandemic policy known as Title 42 that allowed authorities to quickly expel border crossers.
The vast majority of homelessness is due to people getting priced out of the housing market and evicted, as well as zoning laws. Housing First and nice Public Housing are the ways to address that