my thanks to ranking member hawley and particularly to the chairman of the judiciary committee dick durbin for giving us this opportunity. he is interested in this topic i'm going to call on him after senator hawley for his remarks. we are gathered today to hear testimony from a whistleblower, an engineer widely respected and admired in the industry. and not just any expert at an engineer hired specifically by facebook to help protect against harms to children. and make recommendation for making facebook safer we have known for more than a decade that suffering from suicide, hospitalizations or self-harm and depression have skyrocketed as he knows these numbers are more than statistics they are real people and his daughter is one of them. arturo behar is the former director of engineering for protect and care at facebook. and he will tell us about the evidence he brought directly to the attention of the top management of facebook and meta. mark zuckerberg, sandberg, and others in meetings and memos he resoundingly raised an alarm about statistics showing facebook prevalent and arms to teen