Are there any proposals to make sharing code and data with publications a requirement? Depending on the project, many researchers have to rewrite code and reproduce datasets from previous works in order to perform experimental evaluations. Although some dataset are understood to contain private data, and thus cannot be shared, it would be very nice to have access to the source code and results produced along with the papers.

Most of the big data works present results from experiments run with very large databases, and the code developed, which is usually non-trivial to rewrite, is rarely available to the public. I even heard once that some conferences would start to request the source code of the project to be submitted along with the paper.

My question is: is there any global regulation that states what a conference must request while accepting a paper? And, if so, are there any proposals at all to make source code sharing a must?
I don't know any global regulations, but scientific community understand the problem that you  described and that is why github recently made it possible to get a Digital Object Identifier (DOI) for any GitHub repository archive (blog post) making the code citable.

As far as I remember any DOI should be maintained for at least 10 years.