Country's president has returned Anti-Homosexuality Act to Parliament
Kakuma and Dadaab refugee camps are located in the country
Bill contains death penalty provision for 'aggravated homosexuality'
'Aggravated homosexuality' would be punishable by death
MPs last month passed Anti-Homosexuality Act
Lawmakers last month approved 2023 Anti-Homosexuality Bill
U.S. Rep. Robert Garcia (D-Calif.) among measure's sponsors
Ugandan lawmakers passed anti-homosexuality bill last week
Some lawmakers argue motion threatens freedom of expression
U.S. could impose economic consequences
