The current 250 year licence granted to the USA to use English as its official language is due to expire at the end of January 2011. The licence was originally granted by King George III and intended as a stop-gap till the colony (as it was then) decided on it's own language between Arapahoe, French or Spanish.
The new House of Representatives is facing a difficult decision but will probably opt to move to Spanish in the near future. Already 26% of US citizens speak Spanish and California has already experimented with shop assistants pretending not to understand English speaking customers.
The probability is that illegal immigrants from Mexico will now be given teaching jobs to bring the remaining US citizens up to speed.
All official documents such as passports, drivers licences and Costco membership cards will now need to be translated.
Spoof.com has already announced that it is planning a Spanish language web site for its US contributors.