Tax reporting of US Treasury Securities bought on the secondary market

If a Treasury note (with coupons) is purchased on the secondary market for less than the maturity value, and held to maturity, should the difference be reported as interest in the year of maturity rather than a capital gain?

 

Also does this apply to both treasury notes and bonds (with coupons and held to maturity)?

 

I am pretty sure the answer is yes to both, but can someone definitely confirm?

 

I know it applies to treasury bills.

 

Thank you.