US GAAP and IFRS Convergence

This request is for a research paper on U.S. GAAP and IFRS convergence.
The topics required are:

Reasons for the Convergence of GAAP and IFRS
Similarities between GAAP and IFRS
Significant Differences between GAAP and IFRS
Challenges of Converging GAAP and IFRS
Impact of GAAP and IFRS Convergence on Businesses
Impact on Financial Statements/Reporting
Impact on Investors
Pros and Cons of Convergence between GAAP and IFRS