What I want to know is which countries allow parents to immigrate with the main applicant. Lots of countries don't allow it for the fear that they have to bear

What I want to know is which countries allow parents to immigrate with the main applicant. Lots of countries don't allow it for the fear that they have to bear the health care costs; even when the main applicant is willing to give an undertaking to bear the costs. This excludes a section who have parents dependent on them. Singapore is one notable exception I know that grants a long term pass to the parents that folks can renew every 1-3 years, depending on the expiry - the sponsor needs to bear the healthcare costs but at least it provides an option to keep one's parents with them.