With the removal of all data, safety has been markedly reduced. For example, immediately west of Sault Ste Marie, Michigan (KANJ) there is Class D airspace in the United States associated with a Canadian airport (CYAM) in Ontario. The new charts do not publish any frequencies so this airspace is effectively off limits to US pilots using FAA charts. It also makes it impossible to monitor traffic coming and going in the area. This is a huge step down in safety and reduces the ability to maintain situational awareness.
The FAA really needs to maintain a band of data in southern Canada and northern Mexico so that flights near the border can be as safe as those in the rest of the country.
Canada’s charts extend to about the 48th parallel, 60 miles into the USA. Ours need to extend into Canada by a similar amount. The FAA is already aware of this principle. The San Francisco Sectional overlaps the Klamath Falls Sectional by a small amount. All other FAA VFR charts are similarly overlapped.
We need chart overlap into Canada and Mexico.