Comment by roywiggins

I am fairly sure it would be a crime for the President to pull up someone's VA health records on a whim, or at least it would be a crime for anyone at the VA to facilitate him doing that.

We can also add to that IRS data. The articles of impeachment against Nixon included the following:

"He has, acting personally and through his subordinates and agents, endeavoured to obtain from the Internal Revenue Service, in violation of the constitutional rights of citizens, confidential information contained in income tax returns for purposes not authorized by law" (emphasis mine).

There actually are laws regulating the handling of personal data collected by the government and it generally doesn't have a "the president wants to see it" exception.