The Senator, who is considered as the Tea Party favourite received a rousing ovation during a rally of more than 1,000 supporters Monday in Houston while speaking out about the Affordable Care Act, known also as Obamacare.
"You may have noticed that all the Nigerian email scammers have become a lot less active lately," Cruz said, according to the Houston Chronicle. "They all have been hired to run the Obamacare website."
Cruz told supporters that he's working for them and not for D.C. "party bosses."
"People are saying mean things about me," Cruz said, according to the Chronicle. "Who cares? At the end of the day, I don't work for the party bosses in Washington. I work for each and every one of you. What they don't understand is that we're standing here together. We've got a problem in Washington. They're not listening to the American people."
Cruz played an active role in the recent Republican led US government shutdown over the party's opposition to the Affordable Care Act, speaking on the Senate floor for more than 21 hours.
Some political observers see Cruz as Texas' most popular Republican but his approval ratings across the country may be slipping.
National polls have shown that while Americans in general don't love the health care law, they oppose defunding it — especially if it means shutting down the government. And many of Cruz's Senate colleagues have bemoaned the shutdown for tarnishing the GOP's image.
In consolation to Nigerians, Republicans are not strangers to insulting other countries. Mitt Romney, while running on the platform of the Republican party during last year's US Presidential campaign, said he wasn't sure London could host a successful Olympic games while on a visit to Britain.
Romney's remark did not go unnoticed by President Obama who said he wondered how his challenger could become an effective Commander-in-Chief if he could go around insulting America's most powerful ally, the UK.