HARRISBURG - Republican U.S. Sen. Pat Toomey of Pennsylvania, a fiercely anti-tax and anti-regulation lawmaker who never entirely warmed to President Donald Trump, will not seek re-election in 2022, according to a person with direct knowledge of Toomey's plans.But the biggest surprise is that, Toomey, 58, will not run for governor in 2022, when the seat becomes open, said the person, who did not want to be named divulging information from private conversations before Toomey announces it publicly.Toomey, who is serving his second term in the presidential battleground state, will make the announcement Monday, the person said.