By Nandita Bose WILMINGTON, Del. (Reuters) -U.S. President Joe Biden on Monday said he hopes his fellow Democrats can reach an agreement on his “Build Back Better” agenda this week ahead of upcoming U.N. climate talks in Glasgow, Scotland. “That’s my hope,” he told reporters as he departed Wilmington in his home state of Delaware. Asked if there could be a vote in Congress this week, he added, “I don’t know.” Democrats are seeking to coalesce around two key pieces of legislation – an up-to-$2 trillion social spending and climate change plan and a $1 trillion infrastructure plan – to make good …