U.S. President Joe Biden believes social media platforms have a responsibility to "stop amplifying untrustworthy content," the White House said on Wednesday, even as it declined to comment directly on a decision by Facebook Inc"s oversight board to keep a suspension in place for former President Donald Trump. "The president"s view is that the major platforms have a responsibility related to the health and safety of all Americans to stop amplifying untrustworthy content, disinformation and misinformation, especially related to COVID-19, vaccinations and elections," White House spokeswoman Jen Psaki told reporters.