WATCH: Republicans shrug off fears that Trump targeting GOP incumbents could backfire on agenda

GOP lawmakers brushed aside concerns over President Donald Trump targeting GOP incumbents after Rep. Thomas Massie’s, R-Ky., loss, as several Republicans stressed the need for unity to advance the Republican agenda.

Massie lost to congressional candidate Ed Gallrein in Kentucky’s Republican primary last week after months of escalating attacks from Trump, who publicly criticized the Kentucky Republican over repeated breaks with the president and opposition to parts of the GOP agenda.

"Primaries happen," Rep.