Washington -  President Barack Obama has signed into law a bill that will require labeling of genetically modified ingredients for the first time.

The legislation passed by Congress two weeks ago will require most food packages to carry a text label, a symbol or an electronic code readable by smartphone that indicates whether the food contains genetically modified organisms, or GMOs.

The Agriculture Department has two years to write the rules, which will pre-empt a Vermont law that kicked in earlier this month.

Congressional passage came over the strong objections of Vermont’s congressional delegation. Sens. Bernie Sanders and Patrick Leahy and Rep. Peter Welch argued that the measure falls short, especially compared with the tougher labeling requirements in their state. While the bill gives companies the three options for labeling, the Vermont law would require items be labeled “produced with genetic engineering.”... Read More: VIN