WILMINGTON, Del. – President-elect Joe Biden fought to confront the nation’s competing crises — and fierce Republican resistance — on Tuesday as concerns grew that President Donald Trump’s refusal to acknowledge his Democratic rival’s victory could undermine national security.Raising unsupported claims of voter fraud, Trump has blocked Biden from receiving the intelligence briefings traditionally shared with incoming presidents, according to someone with knowledge of the situation but not authorized to disclose private conversations.
Trump's resistance, backed by senior Republicans in Washington and across the country, could also prevent background investigations and security clearances for Biden’s prospective national security team and.