If this is the united states of america and english is the spoken language, so why the spanish all of a sudden:
see... it's a little thing called freedom... maybe a grandpa of yours died for it... but people are free to talk how they want to talk and write how they want to write... if you don't like it... you don't have to talk to them... or do business at a place that caters to spanish speaking people... 
I mean in China towns accross the nation for years, Chinese and other asian languages are spoken and advertised...

The government has a lot it needs to do before it needs to worry about what language people are speaking... and as people of your "sort" seem to often say... if you don't like how America is doing it... maybe you should leave...