Final answer:
President Theodore Roosevelt offered the poet Edwin Arlington Robinson a position as a clerk in the New York Customs House to assist him out of poverty after being impressed with his poetry.
Step-by-step explanation:
The poet who was living in poverty and later received the support of President Theodore Roosevelt by being offered a position as a clerk in the New York Customs House was none other than Edwin Arlington Robinson. Robinson, an American poet who initially faced multiple rejections from publishers, experienced financial difficulties until the publication of his second collection of poems titled 'The Children of the Night' in 1897. His talent eventually caught the eye of President Roosevelt, who, recognizing Robinson's skill and potential, extended a government job to him at the New York Customs House to alleviate his financial burdens. This pivotal moment allowed Robinson to focus more on his writing, leading to a respected career as a poet where he later won three Pulitzer Prizes for Poetry.