Sorry, the " limited combined knowledge and wisdom of 535 people composing all of Congress {When compared to the knowledge and wisdom of the collective world}" will likely decide to authorize George to manage this trade agreement despite your " demand that public debate in Congress of each section of any agreement, and changes if necessary be allowed."
Absolutely nothing in the constitution prohibits them from selecting a manager of the process.
Absolutely nothing in the constitution prohibits them from limiting debate after the selection process has taken place.
If they choose, they could rescind the manager's authority or change the debate rules. It's clearly within their constitutionally defined authority.
In this case Congress knows their limitations and has found a Constitutional method of exercising their authority.
E2, LOL again! In this case, Congress {if they give "G" Fast Track authority} has given over to politically appointed bureaucrats their constitutionalally appointed DUTY!! It may happen despite my efforts as you say, but I SHALL continue to opose this giving over power, legitimately {under the law} mandated to Congress, to small groups of politically appointed bureaucrats. Sorry. Peace and love, George.