I too was very curious about the immigration process in CLE since I have lived here most of my life and never experienced it before, but I just arrived on CO67 today and the process was OK. We were the only flight in -- 4 lines for US citizens and 1 for non. Took me about 5 minutes to see an officer and I was seated in the middle of the plane. I was selected for additional screening since I had just come back from a round the world trip. They quickly searched my bags and asked a few questions and was on my way. Seemed like I was the only one selected for additional screening.

The only annoyance with CLE is that you have to give them back your checked bags and collect it at carousel 7 and then you have to go through security screening again to enter the terminal (the only way). I probably had to wait about 10-15 min to get rescreened as I was now at the end of the line due to secondary. You exit around the A gates. The flight was about 75% full.