<p><img src="https://images.cointelegraph.com/images/840_aHR0cHM6Ly9zMy5jb2ludGVsZWdyYXBoLmNvbS91cGxvYWRzLzIwMjMtMDMvOGQ2NjM4ZDgtMWRhMS00Y2IxLWIyMDctZDIxYjRmN2VjZjU0LmpwZw==.jpg"></p><p>Elizabeth Warren has long been a crypto-critic, and appears to be making it a focus as her re-election bid kicks off.</p>