So far, his salary donations equal about $1.1 million. I suppose the left will think this is not enough or he's trying to show off or something. But to me, it says a lot about the man:
2017
First Quarter: National Park Services (to help renovate the National Battlefield monument)

Second Quarter: Department of Education (for children's camps)

Third Quarter: Department of Health and Human Services (to help with opioid crisis)

Fourth Quarter: Department of T***sportation - (to help with infrastructure projects)

2018
First Quarter: Department of Veterans Affairs (to support it's caregiver program)

Second Quarter: Small Business Administration (for Veterans program)

Third Quarter: National Institute on Alcohol Abuse and Alcoholism (his brother, Fred, died of alcoholism)

Fourth Quarter: Department of T***sportation (again) - (to help with infrastructure)

2019
First Quarter: Department of Agriculture

Second Quarter: Surgeon General (for opioid epidemic and e-cigarettes used by teens and children)

Third Quarter: Office of the Assistant Secretary of Health (to fight the ongoing opioid crisis)