In the United States federal law makes it illegal for landlords to discriminate based on race, national origin, religion, gender, disability, marital status, age, or family status (the presence of children under 18 in the household)... But federal law does not protect against discrimination based on sexual orientation... So you can be evicted, unless there is a state/county/municipality law that explicitly prohibits it...
California (Chapter 352)
Connecticut (Title 46A §81e)
District of Columbia
Massachusetts (Ch. 151B § 3(6))
Minnesota (Ch. 363.12)
New Hampshire (Title 31, Ch. 354A, § 354-A:8)
New Jersey (Title 10:5-3)
Rhode Island (Title 34, Ch. 34-37, § 34-37-1)
Vermont (Title 9, §4503(1))
Wisconsin
are the... states that explicitly prohibits discrimination against sexual orientation (there may be more.... and there are definiately more local laws that prohibit it..)...