Final answer:
True, the ACA prevents denials of coverage due to pre-existing conditions since 2014, expanding coverage and eligibility, especially through Medicaid and state-based exchanges.
Step-by-step explanation:
The statement that beginning in 2014, health insurers will not be able to deny applicants based on pre-existing conditions is true. The Patient Protection and Affordable Care Act (often abbreviated as ACA or nicknamed Obamacare), which was passed in 2010 and fully implemented by 2014, includes provisions that prevent health insurance companies from rejecting individuals because of preexisting medical conditions.
In addition, the ACA expanded Medicaid eligibility and created state-based insurance purchasing organizations, which has had a significant impact on increasing the number of Americans with health coverage.