The father of a man killed by an illegal immigrant slammed California Gov. Gavin Newsom's four-day trip to El Salvador as a "political stunt."

Newsom (D) arrived in El Salvador Sunday to get a better understanding of the root causes fueling migration to the U.S. and to offer an alternative to what he regards as President Trump’s "demoralizing" rhetoric about the Central American nation.

Don Rosenberg, whose son was riding his motorcycle in San Francisco in 2010 when a man who was in the U.S. illegally struck and killed him, said Newsom needs to travel around California to get a better understanding of what illegal immigration is doing to the most populous state in the U.S.

Rosenberg said he considers Newsom "directly related" to his son's death, because the then-San Francisco mayor supported sanctuary laws and introduced a policy that undocumented individuals can drive in the city without a license.

"The guy who killed my son was caught prior to [the fatal crash], and they just dropped the charges, let him go. He continued to drive until he killed my son," Rosenberg said. "Newsom is ignoring his own state and worrying about everything else. ... It's disgusting."

He said Newsom is likely "posturing" for a future presidential run, even if that means putting illegal immigrants before his constituents.

He added that it's not just Newsom, and he feels "betrayed" by Democratic lawmakers at all levels of local, state and federal government.

"Our government has betrayed us. President Obama betrayed us. Gavin Newsom, Jerry Brown, almost every legislator in California has put illegal aliens ahead of American citizens. And the results are a lot of crime and a lot of death."

Watch the "Fox & Friends" clip above.

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