Have there been any measures introduced to stop grave robbers?

Answer 1

Since your question was put under history I will take it as that, but it's a difficult question to answer because it involves many countries of the world and each government is different to protect ancient ruins, etc.

In the U.S.:

President George Bush signed the Native American Graves Protection and Repatriation Act into law on November 16, 1990. "This law establishes procedures and legal standards for the Repatriation of human remains, funerary objects, sacred objects and cultural Patrimony by federal agencies and certain museums, educational and other institutions and state and local governments. Recognizes certain tribal, Native Hawaiian, and individual rights in regards to burial sites located on federal and tribal lands. In general, the Act is based upon the unique relationship between Native Americans and the Federal Government." From: Mending the Circle by the American Indian Ritual Object Repatriation Foundation.

I haven't been able to locate any other information in the protection of Civil War, Mexican, etc.

Is there grave robbers in the modern era? To some extent, but not often heard of. Some teenagers would get their kicks by disturbing graves (some kick) but it is quite uncommon.

Some funeral homes in this modern day have been known to remove jewelry or other objects of worth. If any family is having a burial it is best to hide the jewelry on that person when you are alone with them before the funeral service rather than give it to a funeral director. Please note: Not all funeral directors operate in such an untrustworthy fashion.

In ancient Egypt, the penalty for breaking into a royal tomb was impalement.