Sinéad O'Connor and George Bush may not quite be political allies, but they do seem to be on the same side of one hot issue: N.W.A. (Niggas With Attitude), the controversial L.A. rappers who made headlines with their song ''F--- Tha Police.'' O'Connor, an ardent hip-hop fan, was scheduled to make a cameo appearance on the band's forthcoming album, Niggaz 4 Life, but conflicting work schedules got in the way. Meanwhile, the band's entrepreneurial leader, Eazy-E (above, a.k.a. Eric Wright, 23), jetted off to D.C. for of all things a ''Salute to the Commander in Chief'' luncheon in Washington on March 18. The National Republican Senatorial Committee sponsored the fete, which featured a speech by President Bush and drew 1,400 Republicans. Wright wore a black leather suit to the event. Why was the rapper and self-proclaimed former drug dealer invited? Apparently his donations to various L.A. charities earned him an invitation to join the fund-raising Republican Senatorial Inner Circle. And Wright's spokesman says the rapper ''really loves the President. He thinks he's a great humanitarian and that he did a great job with Desert Storm.'' Senators Phil Gramm (R-Texas) and Robert Dole (R-Kansas), who'd asked Wright to attend the banquet, had no comment.