The degrees alone could be considered equivalent to a US bachelors or masters, or higher for H-1B purposes but for other purposes, it’s too hard to base off one post, although certainly plausible. You’d have to get documentation to substantiate academic equivalencies and your sister would have to find an employer for an H-1B type of role and get picked in the lottery. FYI I work in immigration law although I am not a lawyer yet. If your sister wants to practice law is the US, she should get an LLM. This is the way to go, one of the lawyers I work with went to law school in Colombia and got an LLM before taking their state’s bar exam. An LLM is a masters in law, which is common for foreign law grads to obtain before entering the US legal market, and usually, a prerequisite to taking a state bar exam.