<p><img src="https://images.cointelegraph.com/images/840_aHR0cHM6Ly9zMy5jb2ludGVsZWdyYXBoLmNvbS91cGxvYWRzLzIwMjQtMDMvZTIzYzU4NDUtMDUyOC00NThlLWJiMGEtM2JlNGRhNWE3MjZiLmpwZw==.jpg"></p><p>Two Democratic senators argue that any further approvals would expose investors to risks including “fraud and manipulation.”</p>