Country icon Willie Nelson can't understand why same-sex marriage is still a controversial topic in the U.S., insisting allowing gay couples to wed is a simple matter of human rights.

The subject is currently being discussed in the U.S. Supreme Court in Washington, D.C. as officials debate whether California's Proposition 8 bill outlawing same-sex unions was constitutional - and now Nelson has made his position on the issue clear in a new interview with Texas Monthly.

He tells his hometown publication, "It's ridiculous to me that this is something we're having a conversation about in this day and age. I thought it was something that was settled a long time ago.

"I've known straight and gay people all my life. I can't tell the difference. People are people where I came from... It's about human rights. As humanity, we've come through so many problems from the beginning to here. I guess it finally had to come around to this. This is just another situation, another problem. We'll work it out and move on."

Nelson insists it's time legislators moved the country forward by allowing same-sex marriage, adding, "We'll look back and say it was crazy that we ever even argued about this."

The legendary musician and marijuana advocate posed with custom-made prints of the red Human Rights Campaign's equal sign logo as part of the magazine feature. One piece of artwork featured Nelson's trademark braids in place of the equal sign, while another used marijuana blunts to represent his love of pot.