The peso has lost 14 per cent against the dollar since the November 8 election.
Trump, via Twitter, has jawboned a number of companies, including automakers General Motors Co. and Toyota Motor Corp., on their plans for expansion in Mexico. "Toyota Motor said will build a new plant in Baja, Mexico, to build Corolla cars for US NO WAY! Build plant in US or pay big border tax," Trump said in a Twitter post on January 5.
Trump's plans to reduce corporate taxation, Summers said, would "hugely increase inequality" and could also help strengthen the dollar, further hurting US exporters and the people who work for them.
While Summers favors a big increase in infrastructure spending in the US as a way to boost productivity and growth, he called Trump's plans on that front "a Potemkin village of nothing."
Trump's proposal called for filling an estimated $1 trillion "10-year funding gap" of spending on bridges, highways and airports through private investment and tax credits. Prospects for the plan in Congress among Republican lawmakers are unclear.