benefits for the US to scrap its GAAP and adopt IFRS

Why should US move from GAAP to IFRS, in other words,the benefits for the US to scrap its GAAP and adopt IFRS.
then take ONE of the points mentioned in your first think paper and expand it to 500 words that means pick one of the reasons that why should US move from GAAP to IFRS and expand trying to explain the arguments being to support bringing this about. This is subtlety different from why Europe decided to adopt IFRS. You can refer to the European issue to the support that it helps you explain why the U.S should change its rules.