IF value = 'x' then substring

I am looking to output the substring where country = 'us' only and leave the substring blank for all other countries. I have tried the below commented-out part but I am not sure my structure/logic is correct. Any help would be great

SELECT DISTINCT country,   ID, Name --, IF(country ='US', "SUBSTRING(ID, 3, 5)", " " ) AS substring
FROM TestTable

As @Squirrel mentioned in the comments you can use CASE to fix your issue, the code then would look like this:

SELECT DISTINCT
	country,
	ID,
	Name,
	CASE
		WHEN country = 'US' THEN SUBSTRING(ID, 3, 5)
		ELSE ''
	END AS substring
FROM TestTable