The Law Library has subscriptions to four new e-resources from LexisNexis:

EU Tracker
EU Tracker tracks the implementation of key EU Directives across 20 Member States in 10 practice areas.  There are links to consultation papers, draft legislation and the eventual national implementing legislation of member States.  It is a unique monitoring and analysis tool for lawyers, PSLs and information managers.

JurisClasseur
This database contains French-language legal information: legislation, regulations and case law. It also gives access to a great volume of secondary legal sources and expert analysis.

LexisNexis China Law Database
The LexisNexis China Law Database (LNCHNL) is an authoritative collection of Chinese laws, regulations, tax information, judicial decisions, and other legal documents, collected from government sources, and translated by LexisNexis China Online (COL) in Beijing.

Quicklaw
Quicklaw is a Canadian electronic legal research database that provides court decisions from all levels, news reports, provincial and federal statutes, journals, and other legal commentary. It also offers a case citator and case digests.

They are accessible on the Yale network and username/password are not required to log in. For a list of legal databases subscribed by the law library see here.

If you've ever wondered about the origins of Cinco de Mayo, here's a short article that nicely summarizes the popularity of the holiday in the U.S.:

Cinco de Mayo, from the Battlefield to the Beer Bottle

Cinco de Mayo celebrates the Mexican victory in the Battle of Puebla on May 5, 1862, against the invading French army of Napoleon III...

"Cinco de Mayo" is an official Library of Congress subject Heading. In other words, you can conduct a Subject search in Orbis, Yale University Library's catalog, and you will find several books on the holiday as well as the famous battle in the Mexican state of Puebla.  

Have a look also at the U.S. House of Representatives, Committee on International Relations', Resolution recognizing the Mexican holiday of Cinco de Mayo.

Viva México!