Dear Mr. President:

I had something of an epiphany yesterday while marveling at the existence of undecided voters at this stage of the election. It occurred to me that these voters are likely the ones for whom one (deeply personal) issue will decide things. But I — and most other Americans — made up our minds long ago. Because you and Governor Romney represent two different visions of our nation’s past, present and future. You represent two value systems so distinct that, for most of us, it’s impossible to fathom how anyone could see this thing differently than we do.

In this election, there is one issue that is deeply personal to me: As a 29-year-old young adult with brain cancer, the Affordable Care Act, when it goes into full effect in 2014, will transform my life in ways I never imagined one piece of legislation could. On that day…