evidence: Almost all male U.S. citizens and immigrants between the ages of 18 and 25 are required to register with Selective Service. 1 Males born on or after January 1, 1960 are required to register with Selective Service within 30 days of their 18th birthday, if they are: [...] Males between the ages of 18 and 26 who have not registered with Selective Service can become eligible for WIOA Title I programs by registering. If an individual turns 18 while participating in a WIOA Title I program, he must register with Selective Service no later than 30 days after his 18th birthday. If he fails to register during that period, he may not continue to participate in the Title I program. 7 Males aged 26 and older who have not registered can become eligible for WIOA Title I programs by providing documentation showing they were not required to register, or by demonstrating that their failure to register was not "knowing and willful." 8