Doesn't look like you read my link...two years into Trump's term a murder spree took place
in Nevada by an undocumented immigrant who appears to have entered the country a year earlier...so, according to your reasoning, you could just as easily accuse Trump's people of the same charge.
The answer is for Congress to pass Immigration legislation that provides funding for more CBP Officers, Investigators, Judges, Deportations, Better Asylum Rules, etc....just the sort of things Trump called for later that year...yet now actively blocks so that Biden doesn't look good...i.e. it's all about Trump...not the country...and certainly not the victims being talked about here.