Wall Street‘s main indexes rose on Tuesday as U.S. Treasury Secretary nominee Janet Yellen advocated for a hefty fiscal relief package before lawmakers to help the world’s largest economy ride out a pandemic-driven slump.At her confirmation hearing, Yellen said the benefits of a big package outweigh the costs of a higher debt burden.President-elect Joe Biden, who will be sworn into office on Wednesday, outlined a US$1.9 trillion stimulus package proposal last week to jump-start the economy and accelerate the distribution of vaccines.“Today it’s really all about Janet Yellen, and the push that she is taking for stimulus,” said Thomas Martin, senior portfolio manager at Globalt Investments in Atlanta, adding that the focus on stimulus “sets.