BY A STAFF REPORTER: Terming India as the biggest trading partner, US Treasury Secretary Janet L Yellen on Saturday pitched for advancing an approach called “friendshoring” to bolster the resilience of supply chains.As President Biden has said, India is an indispensable partner to the United States, Yellen said while addressing a roundtable with US and Indian tech business leaders on the sidelines of G20 Finance Ministers and Central Bank Governors Meeting here.