SINGAPORE (Reuters) -The U.S. dollar was weaker on Friday, poised to make its first weekly drop in five weeks against the euro and the yen as worries over the United States' worsening fiscal health sent investors scurrying for safe havens. After Moody's last week downgraded its U.S. debt ratings, investor attention this week has honed in on the country's $36 trillion debt pile and U.S. President Donald Trump's tax bill that could add trillions of dollars more to it. Dubbed by Trump as a "big, beautiful bill", it narrowly passed Republican-controlled U.S. House of Representatives and now heads to the Senate for what is likely to be weeks of debate, keeping investor sentiment fragile in the near term.