Any similarities between President Obama and the aliens in V are purely coincidental:
The script was not written as a roman a clef or allegory for the Obama administration. The script was written by [Scott] Peters during the Bush administration and started before Mr. Obama clinched the nomination. The author, Mr. Peters, is not some evil sleeper right-winger/Obama hater. Mr. Peters, besides being a talented writer and director is a gay man, legally married in California, and a liberal supporter of the President who worked for and donated money to the his campaign. If he’s a mole for some right-wing conspiracy he may be the most committed spy ever. Mr. Peters, who was born in Canada, recently became an American citizen; a process he tried to expedite so he could vote for Mr. Obama, a deadline he missed by two days.