Gov. Dannel Malloy called the senator's record "anathema to my own."
The Democratic presidential front-runner said "we cannot wait any longer."
The Clinton campaign went on high alert after reports of suspicious activity.
The Wisconsin governor has ripped the GOP Congress for not repealing the healthcare law.
“His brother went in and attacked the wrong people,” Trump said.
He campaign manager said the political establishment is "rigging the game."
A spokesman told The Washington Post the 43rd president is "proud to help" his brother.
“I personally am not a fan,” he said.
Cruz called the Fox News host's immigration question a "distraction."
“It is extreme what he is saying about immigrants," Jorge Ramos said.