As it has been reported before the Giants were unable to sign Angel Joseph, a promising young latino player, because of a paperwork dispute.  This article from today's NY Times states that the Giants did tender an offer but it was never consumated because Angel was unable to obtain a birth certificate. 

Angel's parents were born in Haiti and had immigrated to the Dominican Republic to work in the sugar cane fields.  Apprently there is a crackdown by the Dominican government on Haitian immigrants including on their children even when they are born in the DR like Angel.

http://www.nytimes.com/2008/05/25/world/americas/25dominican.html?hp