The reading of its first draft, which was written by Jacob Brinkerhoff, led to the formulation of the Alabama Platform of William Yancey, while those in favor of it included John P. Hale, who organized the Free Soil Party around its chief stipulation.  
Lawmakers like Timothy Pilsbury and Thomas Jefferson Rusk promulgated the Kaufman Doctrine in response to this legislation's widest interpretation by Preston King.  Its author circulated it with instructions that the first person to catch the eye of speaker John W. Davis should introduce it, which a member of the Committee of Seven accomplished.  The reading of its first draft, which was written by Jacob Brinkerhoff, led to the formulation of the Alabama Platform of William Yancey, while those in favor of it included John P. Hale, who organized the Free Soil Party around its chief stipulation.  FTP, name this amendment named for a Pennsylvania legislator which would have barred slavery from territories won by the United States in the recent Mexican War.
Lawmakers like Timothy Pilsbury and Thomas Jefferson Rusk promulgated the Kaufman Doctrine in response to this legislation's widest interpretation by Preston King.  
Wilmot Proviso