"I had a great mom. I loved my mom and she loved me, which... is probably not easy to do."

"She was so good to me. I couldn’t do any wrong, which is a big problem. Maybe that’s why I ended up the way I ended up. I don’t know. I couldn’t do any wrong in her eyes."

Said Trump, quoted at AP.

I like his comical use of "which": "I loved my mom and she loved me, which... is probably not easy to do.... I couldn’t do any wrong, which is a big problem."

He uses "which" to signal a change in voice, from serious/positive to comical/self-effacing.