Betcha Trump will introduce Kyle at one of his events just as soon as this young man is cleared of charges.
Come now, your prophecy is OK, but so far Kyle is presently and actually innocent. Let's keep it that way.
Although charges have been mischievously lodged against him by the (state?) government, Trump is within his powers to see that the Wisconsin prosecutor, obsequiously knuckling under to the racist BLM/Antifa agitators, be overruled; and that Kyle continue to rightly have defended himself and thus remain innocent, with the charges dismissed (and hopefully whatever local prosecutor or his sponsor being dismissed for incompetence and partiality).
In that case the President will never have to invoke other powers of pardoning, the powers that the Clintons used, as Bill was leaving the office of Chief Executive, to besmirch themselves.
Note that at the immediate moments following the shootings, Kyle was not detained by the police for his defensive deployment of the firearm, and was allowed to carry it away, apparently. Note also that in the view of the Mayor, accusing the policemen of malfeasance in the shooting of Jacob was wrong also. He supports the law officers in this, but I don't know what the overall local political dynamic is.