Tech billionaire Elon Musk hit back at Sen. Elizabeth Warren (D-MA) with a series of snarky memes after she decried possible conflicts of interest between him and President-elect Donald Trump. Warren sent a letter to Trump questioning whether he had put ethics rules in place for dealing with Musk's governmental work as the X executive plans to co-lead the Department of Government Efficiency.

Letting Musk do government work without clear conflict of interest rules “is an invitation for corruption on a scale not seen in our lifetimes,” Warren argued.