What issues of government spending is Trump highlighting in his discussion with Elon Musk?

Trump is highlighting significant issues of fraud, waste, and abuse within the federal government. He emphasizes that they're uncovering billions of dollars in fraud, which he predicts will eventually amount to 'hundreds of billions of dollars.' This indicates a systemic problem of financial mismanagement in government operations. Trump praises Musk's efforts to address these issues, noting he's doing 'an amazing job' in tackling government inefficiency. He also mentions that Musk is effective because he attracts 'young, very smart' people to work on these problems, suggesting that innovative approaches from outside traditional government are needed to address entrenched financial waste.