EU-US free trade deal would benefit both sides, Merkel and Obama say

A protester holds a placard with pictures of German Chancellor Angela Merkel and US President Barack Obama as he demonstrates against Comprehensive Economic and Trade Agreement (CETA) and Transatlantic Trade and Investment Partnership (TTIP) agreements ahead of Obama's visit in Hannover, Germany April 23, 2016. Photo/REUTERS
A protester holds a placard with pictures of German Chancellor Angela Merkel and US President Barack Obama as he demonstrates against Comprehensive Economic and Trade Agreement (CETA) and Transatlantic Trade and Investment Partnership (TTIP) agreements ahead of Obama's visit in Hannover, Germany April 23, 2016. Photo/REUTERS

German Chancellor Angela Merkel and US President

Barack

Obama

said on Saturday they favoured sealing a US-European free trade agreement as it would fuel growth on both sides of the Atlantic.

Merkel is expected to discuss the Trans-Atlantic Trade and Investment Partnership (TTIP) with

Obama

when he visits a trade show in Hanover on Sunday and Monday. But support for TTIP has plunged in both their countries.

"The Trans-Atlantic Trade and Investment Partnership is one of the best ways to promote growth and create jobs,"

Obama

told the mass-selling newspaper Bild in an interview.

Merkel said in her weekly podcast that wrapping up a deal would be a "win-win situation," adding that "it is good for us as we will be able to appraise our competitors."

The United States is Germany's biggest trading partner. Advocates of the trade deal say it would unleash further growth while critics warn it could undermine consumer rights and environmental protection.

Speaking separately in London on Saturday,

Obama

said the trade deal had run up against "parochial interests" of individual countries but would create millions of jobs and billions of dollars of benefits.

WATCH: The latest news from around the World