* Obama says law would complicate relations with Uganda
* U.S. sends more than $400 million a year to Uganda
* Homosexuality a taboo in many African countries
By Elias Biryabarema
KAMPALA, Feb 18 (Reuters) - Uganda on Tuesday dismissed U.S. president Barack Obama's call to its leader Yoweri Museveni not to sign an anti-homosexuality law, saying the U.S. was trying to blackmail the east African country.
On Sunday, two days after President Museveni said he would sign the law widely criticised abroad as harsh and unjust, Obama warned that would complicate United States relations with Uganda and be a "step backward for all Ugandans."
A senior Obama administration official said Washington - a major aid donor sending more than $400 million a year - would review U.S. relations with Uganda, a key regional ally in the fight against Islamic extremism in Somalia.
But Ethics and Integrity Minister Simon Lokodo said aid should not be tied to Uganda's stand on homosexuality.
"We don't like to blackmail others. It's very dishonest, very irresponsible and unfriendly of persons to attach behaviour of another community to their sharing resources," Lokodo told Reuters TV in Kampala.
Homosexuality is taboo in many African countries. It is illegal in 37 nations on the continent and activists say that few Africans gays dare to live their sexuality openly, fearing imprisonment, violence and loss of their jobs.
In one of those countries, Gambia, President Yahya Jammeh called homosexuals "vermin" on Tuesday and said his government would fight them like malaria-causing mosquitoes.
RIGHT TO MARRY MICHELLE
Museveni has not yet said when he plans to sign the law.
The anti-gay bill was introduced in 2009 and initially proposed a death sentence for homosexual acts, but was amended to prescribe jail terms including life in jail for what it called aggravated homosexuality.
That category includes gay sex with a minor, where the victim is infected with HIV and where the victim is vulnerable such as a disabled person.
Lokodo said that were he to meet Obama, he would tell him that he had made the right choice in marrying a woman.
"I would tell him point-blank that he chose the right direction and this direction was to marry Michelle," he said.
"They have produced children, why does he encourage and promote others, men and women of same sex, to live together and have no offspring like him?"
Obama, a Democrat who has lobbied to expand rights for gay Americans and supports same-sex marriage, and has urged African nations to end discrimination against homosexuals.
In a statement, UNAIDS, the United Nation's agency on HIV/AIDS, also warned that the law would make more gay people shun HIV testing and treatment when faced with prosecution or jail. (Editing by James Macharia and Tom Heneghan)