A ferocious advertising campaign is underway with passage of President Donald Trump’s landmark policy bill hanging in the balance, as political groups and business interests spent at least $35 million just this month to try to sway key members of Congress and their constituents.

Sen. Mark Warner suggested that the bill, which is nearing a final vote in the Senate, could lose support from Republicans, saying "it's not over until it's over."

"The latest Senate draft bill will destroy millions of jobs in America and cause immense strategic harm to our country."