The subsidy is set to expire in 2022 so Cruz will let it expire - that is not flip-floping.
Cruz's own web site says he just flip-flopped....He said he would 'eliminate' the Renewable Fuel Standards (#19)
https://www.tedcruz.org/five-for-freedom/
2. TWENTY-FIVE FEDERAL ABCs
The rate at which we are spending is unsustainable. And federal programs often fail to support their purported beneficiaries while instead propping up special interests. There are far too many members of Congress who willingly hand out special favors to select industries and friends.
Let’s break the Washington Cartel and restore power to the people. Let’s stop handing over billions to federal favorites. We will sharply reduce the alphabet soup of government entities, beginning with the “ABCâ€s that should not exist in the first place: The Agencies, Bureaus, Commissions, and other programs that are constitutionally illegitimate and harmful to American households and businesses. The following 25 ABCs are emblematic of the types of government functions I will examine, downsize, and reform to limit federal overreach. But these are just a start.
Eliminate the following Agencies, Bureaus, Commissions, and programs:
1. Appalachian Regional Commission
2. Climate Ready Water Utilities Initiative
3. Climate Research Funding for the Office of Research and Development
4. Climate Resilience Evaluation Awareness Tool
5. Consumer Financial Protection Bureau
6. Corporation for Public Broadcasting (privatize)
7. Corporation for Travel Promotion
8. Global Methane Initiative
9. Green Infrastructure Program
10. Greenhouse Gas Reporting Program
11. Legal Services Corporation
12. National Endowment for the Arts
13. National Endowment for the Humanities
14. New Starts Transit Program
15. Pacific Coastal Salmon Recovery Fund
16. Presidential Election Campaign Fund
17. Regulation of CO2 Emissions from Power Plants and all Sources
18. Regulation of Greenhouse Gas Emissions from Vehicles
19. Renewable Fuel Standard Federal Mandates
20. Saint Lawrence Seaway Development Corporation
21. Sugar Subsidies
22. Transportation Investment Generating Economic Recovery
23. UN Intergovernmental Panel on Climate Change
24. UN Population Fund