I saw some photos of the McKinley II FCC circuit board posted by Scott’sRadios. This U.S. version has an FM daughterboard on it. The EU version does not have a separate FM board. While the board is essentially the same as the EU version, which has been available for many years, it appears President has removed some components and circuits, presumably to make it compliant for the U.S. market. Michael Scott from Scott’s Radios did mention light deviation on FM, and did not immediately see an adjustment for FM deviation, but further information will come. President probably spec’ed the FM deviation to less than 2kHz, just to be “safe”.
As stated above, the Anytone 5555N II, and its variants, are a much better value. Yes, the 5555N II is large, but there are other choices available that offer more features than the McKinley II. I think President just bodged together the McKinley II in order to fill the gap until they can sell the new President George II in the U.S., which will have NRC and CTCSS/DCS. Unfortunately, it appears that the George II would probably cost much more than the Anytone variants. Compliance to government comes with many costs.