President Donald Trump on Tuesday announced Stargate, a new entity that plans to invest $500 billion in artificial intelligence infrastructure with the goal of making advancements in industries like health care and positioning the U.S. as the leader in AI.

And, Elon Musk’s controversial arm gesture continues to divide opinions as to its meaning. Some have insisted it was a Nazi salute, while Musk has said the comparisons to Hitler were “tired” and “dirty tricks”.