Republican lawmakers proposed the most significant changes to the tax code in 30 years. Businesses big and small could see changes. And so could individuals. House Speaker Paul Ryan pledged action on the legislation. But the proposal ran into opposition almost immediately. Ylan mui tells us whats in the blueprint and where it might go from here. Reporter republicans call it the biggest overhaul of the tax code in a generation. The plan unveiled today creates four new individual tax brackets. The top bracket would remain at 39. 6 and it applies to households making over 1 million in income. The limit for 401 k contributions remains at 18,000. And homeowners will continue to be able to deduct their mortgage interest. However, the deduction for newly purchased homes will go down from 1 million to 500,000. As for the estate tax, it would double immediately from 5. 5 million for individuals to 11 million. However after six years the estate tax would go away completely. House Speaker Paul Ry