Why so many refusals ?

Why are so many Americans refused when they try to Immigrate to Canada?
Over 1000 a week are turned back at Canadian Borders when they try to visit Canada as undesirable/unqualified visitors. But quite recently stats came out that 83% of Immigration Applications were declined also.

What makes Americans so .....undesirable as citizens?
Why so many refusals

As well, many people who hire PTs have injury or chronic illnesses, etc - thats why they hired the PT. These issues may prevent free weights, at least for certain movements.