At her blog, Ellen Brown—author of The Web of Debt: The Shocking Truth About Our Money System and How We Can Break Free and From Austerity to Prosperity: The Public Bank Solution—writes Monsanto, the TPP, and Global Food Dominance:

“Control oil and you control nations,” said US Secretary of State Henry Kissinger in the 1970s.  ”Control food and you control the people.”
Global food control has nearly been achieved, by reducing seed diversity with GMO (genetically modified) seeds that are distributed by only a few transnational corporations. But this agenda has been implemented at grave cost to our health; and if the Trans-Pacific Partnership (TPP) passes, control over not just our food but our health, our environment and our financial system will be in the hands of transnational corporations.
According to an Acres USA interview of plant pathologist Don Huber, Professor Emeritus at Purdue University, two modified traits account for practically all of the genetically modified crops grown in the world today. One involves insect resistance. The other, more disturbing modification involves insensitivity to glyphosate-based herbicides (plant-killing chemicals). Often known as Roundup after the best-selling Monsanto product of that name, glyphosate poisons everything in its path except plants genetically modified to resist it.