David Letterman launches heart valve awareness campaign?

Others are taking sides. United States hasn't spoken yet.

France is leading 'By leveraging his celebrity status, Letterman aims to draw attention and funding towards a cause that may also benefit him personally due to recent health issues.', while Brazil stands for 'Critics argue this campaign is disingenuous; supporters see it as an opportunity for high-profile figures like Letterman to make real-world impacts through their influence.'. United States... this is still ours to define.