Republican presidential candidate Ted Cruz on Thursday charged that the Wall Street Journal's editorial board is biased in against him and in favor of his rival Marco Rubio because of their positions on immigration reform.

" Listen, the Journal's hobby horse is, they love amnesty [for illegal immigrants]," Cruz said on MSNBC's "Morning Joe," referring to the paper's editorial board, which has written in favor of immigration reform. "They are focused obsessively on amnesty. And so the Journal is supporting Marco Rubio."

"For the next three months, the Journal should change their header to the 'Marco Rubio for president' newspaper, because their attacks, and it's going to keep coming because Marco fights for the principles they care about," he said.

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