Yes, Kendall, the oil could enter the Gulf Loop Current and from there into the Gulf Stream, discussed with links in the Oil spill thread which has disappeared from the current 'below the belt' list.
That is always a problem when someone goes off at a tangent and starts their own peeve thread. Joe has linked the other two threads at the top of this one.

So far, winds and currents have kept the spill (really a gusher, spewing out the oil under high pressure) in an area suoth of the Louisiana Mississippi Delta.

Some progress has been made and part of the oil is being collected and piped to a tanker, but only part- and entry into the Gulf Stream is still a possibility. The damage, if that happens, will be to East Coast U. S. and maritime Canada, but of course some 'tar balls' would continue up the Gulf Stream to Europe.

The main hope for stopping the flow is the relief well, which will not intercept the old well for some two months- and we must hope that will work. There are no guarantees that it will.

Interesting sidelight- US law limits the damages to $75 million, but I am sure law suits will continue for some time.
Somewhere along the line, suit will be brought against the US for the failure of their regulator, MMS to require full compliance by the operator.