Even though it's on a US government website, I'm dubious about their numbers and methods. That report (and earlier ones from 2006-2014) are riddled with weird i

Even though it's on a US government website, I'm dubious about their numbers and methods. That report (and earlier ones from 2006-2014) are riddled with weird inconsistencies. Examples: (1) Vatican has 100% refusal it says. The Pope and 557 people have Vatican citizenship, and that's mostly cardinals and clergy. I doubt the US was turning away 25% of them. The overstay report (linked in my earlier comment) says that the Vatican (Holy See) had a 0% overstay rate. So the US was refusing 25% of visas from a country with 0% overstay? (2) Canada has 49% refusal it claims. But Canadians don't need to apply for B-category visas to enter the US; they get an "implied" B1 or B2 at the border. Canadians could get turned away at the US border and I'm sure some do, but it's certainly not 49% of Canadians. (3) The 2014 version of the report says that 100% of Serbia and Montenegro were refused visas! That's not credible. It's completely at odds with the overstay report that says that the US had 20,149 visitors from Serbia in 2015 and 17,422 in 2014, and 3,972 visitors from Montenegro in 2015 and 3,214 in 2014.