The breadth of immigration law on WestLaw's platform is the best. I can generally find everything I need when conducting legal research. The interface is largely intuitive and the search bar on every page is very helpful for finding a source quickly. It gets the job done. I am confident in my ability to get the answers I need relatively quickly and efficiently.
Like all legal research platforms that actually work and have content, it is expensive. However, I can get what I need, so it's part of the cost of doing business.
They recently changed the secondary sources view. It used to be grouped better, e.g. you could click on treatises, periodicals, guides, etc., now it gives you a mammoth list. I've started using the search bar to get around this annoying piece.
I wish there was better cross referencing between the U.S. Code and the Immigration and Nationality Act (INA). Immigration practitioners refer to the INA all the time and its annoying to have to go to a table to correspond the sections back and forth. I called the reference attorney help line, and too look at the INA as the INA instead of in the code, I have to go out of my plan. That seems silly to me.
Immigration law is a constantly moving storm of law, regulations, policy memorandums and trends. It is vital to stay on top of the changes and I am confident in WestLaw's ability to get me the information I need.