What does one major in as an undergraduate if they intend on being a lawyer?

Anything you want. As long as it's a traditional major (no "legal studies" or "criminal justice") law schools won't care. The most important thing is to take some courses which focus on logical reasoning and also some intensive writing classes as these are the skills you will need in law school. These skills will be pretty much the only thing from college that will be useful in law school - very little of the knowledge you pick up, even from classes with names like Constitutional Law will be relevant.

Many law students major in things like political science, history, or English, but these are not always the best options. Law schools (and law firms) love hard science/math majors as they tend to be better at the logical thinking that studying law requires. It's also important to consider what your backup plan is if law school doesn't work out - a BA in history or political science can be hard to turn into a career. But overall it should be something you enjoy studying, not a major you choose solely to get into law school.

Criminal Justice