1. All 50 states were targeted by Russia in 2016, the Senate Intelligence Committee concluded, painting a more far-reaching Russian intelligence effort than the federal government had previously acknowledged.

But the report — the first from the committee’s investigation into 2016 election meddling — was so heavily redacted at the demand of American intelligence agencies that key lessons for 2020 were blacked out.

The findings landed just hours after Senator Mitch McConnell stepped forward to block consideration of a package of election security bills, and a day after special counsel Robert Mueller warned that Russia was moving again to interfere.