As Democrats in the U.S. Congress call for the Federal Bureau of Investigation to investigate concerns that Russia may be trying to manipulate the November general election with cyberattacks, government officials are wrestling with new challenges to ensure accurate results. In a letter dated Saturday to FBI Director James Comey, Senate Minority Leader Harry Reid of Nevada said the threat of Russia tampering with the elections “is more extensive than widely known.” “The prospect of a hostile government actively seeking to undermine our free and fair elections represents one of the gravest threats to our democracy since the Cold War,” Reid added. Reid’s letter was followed by one from four Democrats who asked the FBI to investigate whether officials of Republican presidential nominee Donald Trump’s campaign may have conspired with Russia to carry out recent hacks against the Democratic National Committee and Democratic Congressional Campaign Committee to “interfere with the U.S. presidential election.”