This is the biggest issue to me. Affairs are a personal matter between his family and his wife. And when they involve subordinates, his company. But what is absolutely unacceptable is knowingly engaging in a continued relationship with a Chinese spy. He had to have known that Singapore confiscated her passport, and I'm sure he brought it up. There are very few reasons why a country would confiscate your passport.

Also, both the company she was "CEO" of and her path to that role are so shady that it's unbelievable that it even worked. Though it seems it did to a point.

Anyways, I think he knew; or at least suspected it and kept going.