Is Vanguard S&P 500 halal?

Could you please clarify whether Vanguard S&P 500, as an investment option, adheres to the principles of Islamic finance, often referred to as being 'halal'? Islamic finance prohibits investments in companies or industries that are deemed harmful, such as those involving alcohol, gambling, or usury. Given the diverse nature of the companies comprising the S&P 500 index, does Vanguard's offering ensure compliance with these religious guidelines? Additionally, are there any specific screening processes in place to ensure that Vanguard S&P 500 is an acceptable investment choice for those seeking halal investments?