AFAIK, Law is not offered for undergrad, it is a grad program. You can however do pre-Law
In most countries outside of the USA, the LL.B is the internationally recognized law degree that allows you to practice law. In some of those countries, however, some schools require a BA or BS, or AA or AS first.
Other countries allow for entering the LL.B program right after high school.
In the US, we are unfortunately in one of those countries which require, in most states, to have four years of college (BA/BS) first and the law degree is usually called a JD, but some US schools still use the LL.B moniker which equates to the same degree.
Some states, like California, allow for entrance without a bachelor's for some second tier schools that are Cal Bar accredited or non accredited (requiring a 1st year bar exam called the baby bar).
But some top schools like Tulane allow for entrants without a bachelor's degree or four years of college.
Also, being an apprentice to sit for the bar is a non law school option (www.calbar.org)
So law is more flexible in entrance requirements vs. the MBA which always require a bachelor's degree (as far as I know). And some competitive MBA programs won't consider you unless you are a legacy, but usually have to have post-bachelor's work experience.
A legacy is if one or both of your parents went to grad school where you are applying or made a very generous donation. Admissions laws require no more than 1/3 of students of any stripe to be legacies.
But don't knock legacies as some become Presidents.