Hello all, I need help researching for a project. Here is the question. It would be a massive help if I could get specific changes in the last 5 years because it is not easy to find anywhere. Sources would also help massively.

The Schedule A (Itemized Deductions) has seen some major changes in the last few years. What are some of the changes made to the Schedule A? Why were these changes made? Will these changes result in changing taxpayer's behavior? For example, do people only give to charities because they will receive an itemized deduction for it?