I would say that the lines which show us how desperate the poet is are the following:
"... helpless in my throes, Biting my truant pen, beating myself for spite--"
As you can see here, the poet says he is helpless, meaning that he cannot find inspiration to write what he wants to write. Therefore he is desperate for some inspiration, which is why he is biting his truant pen in order to show how anxious he is to get his inspiration back.
<span>Well, he starts off by justifying his reasons with patriotism. "Nowhere is the promise of innovation greater than in American-made energy." He also uses facts and promises of a brighter future to gain an audience. "75% of our potential offshore oil and gas resources. Right now, American oil production is the highest that it's been in 8 years. Last year, we relied less on foreign oil than in any of the past 16 years." We also see more facts in his closing statements, "But with only 2% of the world's oil reserves, oil isn't enough"
He then inadvertently talks about different types of energy sources. These being clean, reliable and opening jobs. This passively emphasizes that we need clean energy for ambiguous reasons, such as global warming and pollutants. It also gives the listeners hope of an increase in the job market. We know that America has had low job-rates lately, so the possibility of new jobs sparks a fire in the heart's of the people. Also, he mentions the gas will be cheaper, which is big, too, since our economy has gone through inflation and a financial depression, and because of this gas has skyrocketed. Cheaper gas motivates people to invest (Taxes?) in these new ideologies and technologies.
Hope this helps :)</span>
