This one was uttered by Rachel Maddow on her MSNBC show. It is a mash up of “uphill battle/struggle” (something difficult often because others are causing problems) and “swim against the current” (go against prevailing thought). The latter metaphor was used by Shakespeare Henry IV: “You must now speak Sir John Falstaff fair, which swims against your stream.” The two phrases were likely jumbled because they both involve someone fighting for something against adversity. A big thanks to the comedian Frank King! You can check out Frank at http://thefunnyhealthcarespeaker.com/.