Sentence:  Nowadays, the atoll's growing population survives on a depleted trust fund from the Compact of Free Association with the US, but payouts come to just $100 per person, according to locals. ... Those who can afford it have taken advantage of the Compact's <WSD>visaless</WSD> travel benefits and migrated to Hawaii. 
Meaning of the word marked with <WSD> tags:  Without requiring a visa; visa-free.