Systemically Important Financial Institution: the newest designation for a firm that's too important to let fail, and with the tag comes new scrutiny from regulators. Three firms, AIG (NYSE:AIG), Prudential Financial (NYSE:PRU), and GE Capital, are at the top of the list to be named soon.

In the video below, Motley Fool contributor Jessica Alling covers the changes the designation dictates and what they may mean for the firms listed above.