US HEALTHCARE SYSTEM VS OTHERS GAPS/CHALLENGES

What shortcomings/gaps have you found in the systems used by other countries, given the variety of options for our nation to address the healthcare challenges? (If you happen to live in a country outside of the United States, feel free to focus on the country where you live.)

MUST BE IN AMA FORMAT.
USED 2-3 REFERENCE,
USE QUALITATIVE AND QUANTITATIVE INFORMATION.
TRY TO BE LESS THAN 500 WORDS