The vice president, who serves as president of the Senate, was scheduled to be in Indiana on Wednesday.
Senator Ben Cardin, the committee’s Democratic chairperson, will be presiding, an aide said on Monday. An aide to Democratic Senator Patty Murray, who as president pro tempore normally would preside in the absence of Harris, said she was not attending. Aides to Murray did not immediately respond when asked why she wasn’t attending.
Some members of Congress are expected to skip the address. Senator Bernie Sanders, an independent who caucuses with Democrats, said Netanyahu should not be welcomed into Congress and in a statement harshly criticized his “war machine.”