SHELBYVILLE, Ky. (AP) — President to challenge maverick Republican Rep. Thomas Massie of Kentucky announced his candidacy Tuesday, pledging to steadfastly support the president's agenda while describing the incumbent as an obstructionist.

Retired Navy SEAL officer Ed Gallrein entered the 4th District campaign after gaining Trump's endorsement. He will have the president's on his side, and a super PAC launched by Trump aides already has run ads attacking Massie. But he will confront an entrenched, well-funded incumbent in Massie, who steamrolled past challengers, even when he incurred Trump's wrath.

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