Add the comma before “with”

Warning²Federal courts, Illinois courts21st and 22nd editions

In “Compare X, with Y” the comma in front of “with” is part of the signal, as is the comma before any “and” that adds an authority.¹

1. 1R. 1.2(b) Signal that suggests a useful comparison or contrast. Tables: B1.2 Introductory Signals.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.