From the above Breitbart link referenced in post #51
....Myth: Congress will have more control over the trade process under fast-track.
Truth: If Congress gives the Executive six-year fast-track authority, the Senate will cede its ability to amend any future legislation implementing any yet-unseen global trade and regulatory pact; cede its ability to control debate over that pact; and cede its ability to subject that pact to the 67-vote threshold required for treaties, as well as the 60-vote threshold required for important legislation. Proponents of fast-track suggest the negotiating objectives somehow bind the Administration; this is false. The negotiations on the Trans-Pacific Partnership are nearly complete and have been ongoing for years, long before any negotiating objectives will have been suggested. Moreover, the negotiating objectives are vague and lack any meaningful enforcement mechanisms—particularly enforcement from Senators and Representatives not on the revenue committees. Congress will be giving up the only leverage it has: the ability to amend legislation or to refuse to cut-off debate. No fast-tracked deal has ever been defeated, regardless of whether fast-track “objectives” have been ignored, overlooked, or violated by the Executive.
Myth: Congress is ceding no institutional powers under fast-track.
Truth: By eliminating its own powers of review and amendment, Congress would dramatically shift the carefully calibrated balance of power between Congress and the President. Fast-track would ensure that the President has complete discretion over the drafting of international agreements Congress has never even seen.
The Constitution says these type of deals should require advise and consent by a supermajority in the Senate.
This takes away advise and the supermajority.