"Given current weaknesses in the global economy, it is also important to maintain our focus on the recommitment made at the last G-20 to consult closely with one another on exchange rate policy, and to refrain from competitive devaluation," Lew stated.
The Treasury secretary noted that the next meeting of G-20 finance ministers and central bank governors should be used as an opportunity to promote global growth.
Lew urged the European Union and United Kingdom to hold negotiations on the future of their relationship in "a smooth, pragmatic and transparent manner."
On June 23, the United Kingdom held a referendum to determine whether the country should leave the European Union. According to the final results, 51.9 percent of voters, or 17.4 million people, decided to support Brexit, while about 16.1 million opposed it.