Market Failure and Transaction Cost , economics homework help

Write a minimum of 2 pages on the following:

Find an article published within 60 days prior to October 3, 2016 that deals with a government action intended to alleviate a market failure.
Evaluate this decision in light of the potential or realized unintended consequences and the role that transactions cost plays in the market failure.
Create a demand-supply graph that illustrates this market failure and very briefly explain the graph.