A path for citizenship is the same as amnesty simply because it bypasses the citizenship laws in this country.
Someone who has committed a felony is not eligible for citizenship.
In order to be in the US illegally, one has to commit multiple felonies (with very rare exceptions), from tax fraud, to ID theft/fraud, to document fraud, and more. Each one of these crimes would disqualify one for citizenship.
Providing a path to citizenship requires that these felonies be either forgiven or overlooked. How does one provide any sort of 'path to citizenship' and not provide amnesty for any of these felonies? Are we just going to overlook these felonies to give that path? What about the victims of these crimes, especially identity theft victims that impact tens of millions of people per year and a high percentage is directly tied to illegal immigration.
Another requirement is to apply for citizenship, one has to be a "lawful permanent resident for 5 years (3 years if married to a US citizen)." Another part of the law that we will have to set aside to provide a 'pathway'.