The market opened with a slight decline as the Japanese government plans to expand a state of emergency it declared for the Tokyo region last week to seven additional prefectures in an effort to stem the spread of COVID-19.
But the preparations come as Democrats, accusing Trump of fomenting and applauding what they branded an "insurrection" and "coup" attempt last week, seek to force Trump from office prematurely.
Four more senior advisers in the White House National Security Council have resigned following the storming of the U.S. Capitol by supporters of President Donald Trump.
The Republican-led Senate and Democratic-controlled House of Representatives were due to meet to formally certify the results of the Nov. 3 election in proceedings that could stretch past midnight.
However, the bourse is reconsidering and could reverse its decision yet again amid confusion over rules set by the Trump administration and tension within Washington on China policy.
The runoffs for two Senate seats follow the November 3 election that saw Democrat Biden narrowly win Georgia and defeat President Donald Trump in their bitter White House race.
The Senate is expected to hold a procedural vote on Trump's veto on Wednesday evening, which could lead to final passage later in the week or over the weekend.
Mitsuo Imaizumi, chief FX strategist at Daiwa Securities in Tokyo, expects the pound and euro to decline against the dollar, reaching $1.30 and $1.15 respectively by the end of the summer.
Investors largely shrugged off comments by US President Donald Trump that a nearly $900 billion stimulus bill, agreed upon after months of wrangling in Congress, was "a disgrace" that he might not sign.
In the past four months, Israel reached deals with the United Arab Emirates, Bahrain, Sudan and Morocco as part of what the United States calls "the Abraham Accords."
"Are you ready to vote for two senators who know how to say yes and not just no?" Biden told an Atlanta drive-in rally, where attendees remained in their cars because of the coronavirus pandemic.
Any effort to try to persuade Congress not to certify the Electoral College count on Jan. 6 must earn majority approval from both chambers of Congress that day.