There is no second thought about it and it must be implemented immediately and very rightly said in earlier comment that "late to never too late.
Secondly, FDA must look into it very seriously on the global level and these regulations should not be meant only for developed country where health standards are high as compared to third world countries. The companies producing Feed Grade Antibiotics should be restricted not to produce for export as well because third world countries are market paradise for them. Lets look at humanity on the global canvas and not merely for a limited level of mankind.
The dilemma is that these growth promoters are used here like key ingredient and they do not focus on buying quality ingredients and the animal is fed with GOD knows what from day one and yet we claim human. I request FDA to apply and enforce regulation on globally if they want serve humanity and protect our future generations from resistance and unknown diseases.
Thanks Mian for the comprehensive comments you have posted....that should really be the action plan and must be implemented globally keeping in view the humanity in general.