The Mexican legal system is a descendant of the old Napoleonic Code brought over from France and Spain during colonization.
The two major legal traditions which are the basis of law in most countries today
are generally classified as Civil Law and Common Law. Civil Law is a descendant of the Roman Laws developed under the auspices of the Emperor Justinian.
The European countries tended to develop their legal systems following the more codified Civil Law, while England adopted precedents following local customs and practices which developed into what is known today as the British Common Law.
As these countries colonized and expanded their respective territories, they transplanted their system of Laws. The United States and Canada follow the British Common Law, and Mexico follows the Civil Law.
Obviously, this explanation is an oversimplification made by me, a layman, and intended for the edification of other layman; not for the legal scholar.
If the divorce was lawfully conducted according to Mexican law, and a legal decree to that effect was issued then it is legal in the US.
Yes, it is legal to drive a Mexican car in the US as long as the vehicle meets all the necessary requirements and regulations for driving in the country.
That is called bigamy!
No, if they are in the US legally, they are allowed to live here.
The US Supreme Court stands at the top of the US legal system.
The US state that has a legal system that is related to Napoleon is Louisiana.
no
In US law a common law marriage does have some legal standing; but is not considered a legal marriage. In most cases a legal marriage anywhere in the world is considered legal in the United States. Therefore if Mexico considers you to be married then the US does too.
If Mexican nationals apply for US citizenship they might get legal papers, IF they are accepted as US citizens.
What is one way the U.S. legal system impacts U.S. businesses What is one way the U.S. legal system impacts U.S. businesses
Yes, beginning in June 2013, same-sex marriages are legal for the purposes of US Immigration Law, as long as they were legal in the place where they were performed.
No. It has warped the US legal system badly.