Six albums in, Meghan Remy’s U.S. Girls project shows few resting on its laurels. Having originally dealt in lo-fi loops and drones on earlier records like Go Grey, subsequent releases saw her pop sensibility rise increasingly to the fore, culminating in her 4AD debut and one of 2015’s finest albums, Half Free. Eagerly anticipated follow up In a Poem Unlimited has carried that trend on with aplomb. Not only is the new LP Remy’s most widescreen, pop-heavy outing yet, it’s also her most political. Her lyrical ethos here can be summed up with the title of ‘M.A.H.’, short for ‘Mad…