Yes.
Is a Washington, DC marriage valid in the United States? (hint: same answer applies to both)
my wife divorced her husband by mail in Guam,they were married in Canada,is the divorce valid in Canada
Yes. Any valid state issue I.D. is valid for enter and exti Puerto Rico.
As Puerto Rico is a US possession, the laws valid and applicable everywhere in the US would apply in Puerto Rico as well.
No! You have to get a marriage license for a marriage to be valid.
yes
A marriage that is valid and documented in El Salvador would be valid in the US.
Yes. All US drivers licenses are valid in all US states, and Puerto Rico is part of the US
You might be able to slip through the cracks and get married, but the marriage will not be legally valid. It will not be valid for immigration purposes, since one of the requirements is proof of the legal termination of all previous marriages prior to the qualifying marriage. Mexican divorces take a long time even if it is agreed. 2 years minumin.
Marriages in Las Vegas are recognised world wide and it is valid but it does not confer citizenship.
Yes, seeing as Puerto Rico is part of the US
It you are a US Citizen a valid State Identification is all you will require.