Trump warns Iowans: Cruz 'will destroy your ethanol business'
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GOP presidential front-runner Donald TrumpDonald TrumpGOP-controlled Congress nears legislative triumph — on Russia The Memo: Trump frustrations grow as pressure rises Trump nominates two former lawmakers to administration positions MORE launched his final salvo against Ted CruzTed CruzMcConnell to pin down colleagues on healthcare Cruz denies he is being considered for attorney general Cruz being considered to replace Sessions: report MORE just hours before the Iowa caucuses as he accused his main rival of seeking to destroy the state’s ethanol business.

“He will destroy your ethanol business 100 percent,” Trump said Monday during a rally in Waterloo, Iowa 

“The oil people are funding him and they don’t want ethanol. Your ethanol business, if Ted Cruz gets in [the White House], will be wiped out within six months to a year."

He went on to characterize criticism by Iowa Gov. Terry Branstad against Cruz as tacit approval of Trump by comparison, reminding voters that “I’ve been for you.”

The real estate tycoon also criticized Cruz and Jeb Bush by name for spending millions on their organization while failing to catch up to Trump.

“I hear they have all these great ground games, people pouring in in buses and trucks, they are spending the money they are given by the special interests and lobbyists,” Trump said.

“I’m very proud of something — I’ve spent less money than anybody else and I have the best results, I’m number one. That’s what I want to do for this country.”

In what’s become a fixture of most rallies, he deepened the criticism of Bush’s spending, this time comparing it to how America lags behind many other countries on education despite massive spending.

And he bashed Republicans for failing to get the best of President Obama and for not charting a bold path.

“Obama is a terrible negotiator except when it comes to negotiating against the Republicans,” he said.

“I’m not angry at the Democrats because I understand where they are coming from. I’m angry at the Republicans because the Republicans roll over and allow this stuff to take place. And then they talk about trying to balance the budget in 25 years. Why 25 years?”

Trump comes into caucus night with the lead in most polls, a few points ahead of Cruz in most recent polls.