US Treasury Secretary Steven Mnuchin on Thursday pledged a new round of tax cuts that he said would benefit ordinary Americans. President Donald Trump, who faces a tough reelection bid in nine months, raised the possibility of tax cuts earlier this week, saying a proposal could be rolled out within three months. Any new stimulus would add to 2017’s budget-busting $1.5 trillion round of tax cuts, mostly aimed at corporations and the wealthiest taypayers.