NEWARK, N.J. — Donald Trump’s position on health care? Repeal and replace the Affordable Care Act “with something terrific.”

On what to do with an estimated 11 million immigrants currently living in the country illegally? “We’re going to have plenty of time to talk about it,” he told reporters during a recent trip to the U.S. border with Mexico.

As Trump pushes ahead with an establishment-bucking campaign for the Republican presidential nomination, the real estate developer and former reality TV star’s decidedly unconventional approach to politics includes forgoing — so far — any substantive discussion of public policy.

Identifying problems and presenting preferred solutions is usually standard operating procedure for candidates for office at any level, perhaps none more so than president. Developing policy is a key role of campaign staff, and the resulting work is touted in speeches and rollouts designed to win headlines and voters alike.

Most of the other candidates for president in 2016 have records of public service, having cast votes as lawmakers or executed policy as governors. Those who lack such time in office, such as retired neurosurgeon Ben Carson, have still staked out clear positions on issues that include health care and managing the economy.