CHICAGO (AP) -- As Republicans try to unite around a replacement for the Affordable Care Act, one of the most popular parts of the law will be among the most difficult to replace: the guarantee of health coverage for people with pre-existing conditions.
Under the health care law, insurance companies are required to cover people with serious medical problems. President Donald Trump has said he wants to "keep pre-existing conditions" but has not said how he would do it.
Some Republicans favor state-based solutions, including high-risk pools, where people without other options can turn for coverage. More than 30 states ran high-risk pools in 2011 before the law took full effect, but they had net losses of more than $1.2 billion.