WASHINGTON (Reuters) - President Barack Obama said on Tuesday he told new British Prime Minister David Cameron he remained committed to a "special relationship" between their countries and invited him to visit Washington this summer.

"The United States has no closer friend and ally than the United Kingdom, and I reiterated my deep and personal commitment to the special relationship between our two countries -- a bond that has endured for generations and across party lines, and that is essential to the security and prosperity of our two countries and the world," Obama said in a statement after calling Cameron to congratulate him.

(Reporting by Matt Spetalnick)