Democratic Texas Rep. Beto O’Rourke’s senate campaign was flagged by the Federal Election Commission (FEC) on Sunday for accepting “excessive” and “impermissible” donations.

The FEC notified O’Rourke that a preliminary review of his campaign’s July quarterly report showed contributions from one or more individuals with addresses outside of the United States. Donations were also made that “exceed the limit” determined by the federal government. O’Rourke has 45 days to respond. (RELATED: O’Rourke Receives Four Pinocchios For Denying Trying To Flee Drunk Driving Crash)

2/ Not uncommon for campaigns, like that of @BetoORourke, that are raising a ton of cash — D or R — to have some campaign $$ screw-ups. But the screw-ups must get dealt with nevertheless. pic.twitter.com/85FbKBotKX — Dave Levinthal (@davelevinthal) October 1, 2018

The warning from the FEC came on the same evening that O’Rourke was scheduled to debate Sen. Ted Cruz at the University of Houston. The El Paso congressman declined Cruz’s invitation to the debate, instead live streaming his repeated attempts at making a campaign ad. O’Rourke notably avoided committing to any debates against Cruz for weeks during the summer, and even bowed out of the first tentatively scheduled debate saying he was unhappy that he didn’t get a big enough say in the terms.

Cruz and O’Rourke are in a competitive race for the Texas Senate seat. Cruz leads O’Rourke by nine points according to independent Quinnipiac University poll released in September.

O’Rourke’s campaign did not immediately respond to The Daily Caller News Foundation’s request for comment.

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