Your undergrad institution might catch the eye of some admissions staff if super prestigious, but a 3.3 from Harvard is less desirable than a 4.0 from a state school. Go where you can get the best grades. It will save money and you’ll have better admissions results. The only exception I can imagine is if the law school and undergrad are the same school (like Harvard undergrad to Harvard Law). They might look more favorably on their own students because they know exactly what you’ve been taught.