How Far Can The Government Pry Into Our Sites?

[DieselMinded]

Had something very interesting happen today . A member requested a very harsh anti obama teeshirt from our tee shirt vendor in a private message , with in hours the tee shirt vendors home phone rings and its Special Agent ect.... very firmly suggested that ,said shirt does not get made or it would be detrimental to his business, I talked to both parties involved and the PM was the only communication here.

I have contacted my host and they said that they will not allow "content monitoring" with out court order and that they are at liberty to notify me if that's the case , and that there is currently No monitoring of content on my server .

So here we are .....

Can the government intercept internet communications w/o access to the server or end users computer , and if so could they have search engines searching content as it travels from ISP's?