Congressmen haven't been any of the following in many decades: * Drafters of legislation * Debaters of policy * Thought leaders for the nation at large, or f

Congressmen haven't been any of the following in many decades: * Drafters of legislation * Debaters of policy * Thought leaders for the nation at large, or for any subset of it, including rather perversely, Congress * Experts of any sort on issues that matter at a national level So basically, there is no reason Alzheimer's medication is incompatible with their job duties.