Why is it as a soon as a politician announces they will start in the future to have a concept of a plan at tackling an issue, many people react as if it’s already done?

No actual implementation steps have been taken or explained. Will this happen before or after the health care plans are released? Before or after the still pending infrastructure bill?

“ Trump said he was immediately taking steps to implement the ban, which he would also call on Congress to codify in law. *It was not clear what steps he would take*”