Reports of a proposed US border-adjustment tax, which aims to tax imports but offer a rebate for exports, have affected the share prices of a number of US retailers overnight. 

Many retailers - particularly clothing and fashion retailers - rely on Asian and Middle Eastern suppliers for their products. Fast fashion has been modelled on this structure, and consumer demand has driven prices down. 

Can US manufactured goods compete? Certainly in the short term, there will be a huge pressure on retail margins whilst retailers adjust their supply chain and product accordingly. 

This may just lead to a greater push to online sales, away from stores, for retailers to reduce costs to their bottom line.