WASHINGTON (NEXSTAR) - It is shaping up to be a big day in Washington, D.C., Monday exactly four years after the attack on the U.S. Capitol, Congress will meet again on January 6, this time to certify President-elect Donald Trump's return to the White House. Vice President Kamala Harris will lead the proceedings, joining a small club of vice presidents who have overseen the certification of their own presidential election loss. Capitol police say they expect the process to be peaceful. "For those of us that were there in the Capitol, it's going to be a quite an emotional experience to to be back in that environment on that day,” said Sen. Adam Schiff (D-Calif.). The nation’s capital is on high alert, fencing and barricades are already up surrounding the Capitol and extending for blocks. "Our nation's capital is prepared to ensure that the legislative process will proceed without disruption, and our government will have a peaceful transfer of power,” said U.S. Capitol Police Chief Tom Manger. Senate Majority Leader John Thune (R-S.D.) says it is time to look past what happened on January 6, 2021.  "That's four years ago. I think the American people are living in the present,” sad Thune. Lawmakers say they have worked over the last four years to make sure an attack on the peaceful transition of power never happens again.  "And we have a plan and a strategy in place. That's not to say there aren't threats all the time on members of Congress,” said Sen. Amy Klobuchar (D-Minn.). Lawmakers will gather Monday afternoon to begin the certification and they're hoping the snow in Washington, D.C., does not have an impact on the proceedings.