It appears that the political stunt of convicted Communist terrorist Gonzalo Boye is DOA. The lawsuit was a politically motivated stunt. Furthermore, the United States has an independent judiciary and a free press if such events necessitated a trial.
Spain is already suffering from disastrous relations with the USA largely due to the socialist regime
currently in power. No doubt the left will claim it is all Bush's fault, but Zapetero is at fault.
Much of US relations with Europe are a consequence of over the top rhetoric from populist idiots of the far left. It is easier to blame the USA and have a mindless obsession with Israel and Arabs claiming a contrived ethnicity than to talk about safety nets, creating jobs and criminality.