Biden fractures foot after fall, will likely be in walking boot 'for several weeks'

Biden’s White House senior staff is expanding ahead of his Cabinet announcement Tuesday. His transition announced two deputy directors of the White House Office of Legislative Affairs: Reema Dodin and Shuwanza Goff.

Dodin served as deputy chief of staff and floor director to the Senate Democratic Whip, Sen. Dick Durbin.

Goff served as floor director for the House of Representatives under House Majority Leader Steny Hoyer -- the first Black woman to hold the position.

This announcement brings the total number of Biden senior staff to 12: five men and eight women.

-ABC News' Molly Nagle

The Michigan board of state canvassers will convene at 1 p.m. ET Monday to certify to election results.

By state law and historically by practice, certification by the board of state canvassers -- which is made up of two Democrats and two Republicans -- is a procedural step. 

The board is obligated to confirm the election results per state law -- essentially validating that the unofficial results match the tabulated votes. If the board is deadlocked, a court would likely intervene and compel certification.

All 83 counties in Michigan have certified their results, including the contested Wayne County, according to the secretary of state. The state bureau of elections also submitted a formal recommendation to the canvassing board, not only confirming Biden's victory in the state but also assuring that the errors in reporting, which Trump and his allies have exploited, are "all attributable to human error," "did not affect the actual tabulation of votes" and "were identified and corrected either prior to or during the county canvass." 

While Republicans, including RNC Chair Ronna McDaniel, have called for a delay in certification to conduct an audit of Wayne County's results, the secretary of state already confirmed plans for a post-election audit, including a performance audit in Wayne County. Under current state law, audits can only be completed after the results are certified.

Biden's margin of victory in Michigan is currently more than 154,000 votes, nearly 15 times Trump's margin in 2016.

-ABC News' Kendall Karson

Officials in Michigan and Pennsylvania are slated to meet Monday to certify votes despite last-ditch efforts by Trump and his allies to override his election loss through legal battles and political pressure on GOP-controlled state legislators.

The president has largely hunkered down inside the White House since Election Day -- the last time he took questions from reporters -- and has no public events on his schedule again Monday. Over the weekend, as coronavirus cases climbed across the country, Trump went golfing instead of meeting with world leaders at a G20 event about the pandemic. 

Biden and Harris are pressing forward with their transition, meeting virtually with the U.S. Conference of Mayors, a nonpartisan organization, on Monday.

Biden’s team, meanwhile, continues to warn that Trump's refusal to concede not only harms American democracy but, hindering their access to pandemic plans, may put American lives at risk.

Ron Klain, Biden's incoming chief of staff, told ABC’s “This Week” that the president-elect is still being denied intelligence briefings, FBI background checks on potential Cabinet nominees and access to agency officials to help develop plans including those on coronavirus vaccine distribution.

Biden shared a congratulatory phone call Sunday night with Prime Minister Jacinda Ardern of New Zealand, according to a readout issued by his transition team.

Biden also congratulated Ardern on her reelection, which she overwhelmingly won last month, and the two discussed containing COVID-19, climate change, strengthening democracy and "maintaining a secure and prosperous Indo-Pacific region."

The president-elect also praised Ardern's leadership after the 2019 Christchurch massacre and during the COVID-19 pandemic, calling her a "role model."

In total, Biden has now spoken with world leaders from 14 different countries and the Vatican.

-ABC News’ John Verhovek