So you don't think the Republican candidate for the Presidency of the US inviting a foreign power, one that is at the best of times in a rather tense relationship with the United States, to hack into US systems just to gain dirt on the other party's nominee is reasonable?
It's obvious to a native speaker of English (who isn't astroturfing the Democrats' talking points) that Trump was NOT inviting the Russians to initiate a new crack on his opponent's servers.
He was ribbing his opponents, and keeping their lax security (and their "The Russians are aiding him!" attempt at distraction) in the public eye, by pointing out that the Russians probably ALREADY have the emails that Clinton's people "can't find", and inviting them to dig them out of their own archives and provide them to investigators and/or the press.
People claiming he is inviting new espionage don't just look foolish. They also play into his hands, by keeping the issue in the face of prospective voters.
But feel free to continue. B-)