He was prevented from entering the White House due to an "administrative error" by security personnel
Gerry Adams has called for a full review of US security arrangements for Sinn Féin representatives visiting the country.
Yesterday Adams said the party would not be put in the "back of the bus" after he was refused entry to the White House on Tuesday.
The secret service have apologised for what they called an "administrative error" that led to Mr Adams being delayed for 90 minutes at a security check before he gave up and left.
In a statement this afternoon, the Sinn Féin leader called for a review of security arrangements as well as "the full normalisation of relations between Sinn Féin and the White House".
Mr Adams says, “the constant additional security processes and delays which Sinn Féin representatives are regularly subject to has long been a cause of concern. We have raised it privately in the past.
“Yesterday my colleague Martin Ferris was delayed getting on his flight to Boston and when he eventually arrived on a later flight he was held for several hours," he added.
He also welcomed a letter from Congressional members to the White House expressing 'their outrage' over the situation.
Earlier, Mr Adams defended comparing the treatment of his party to that of civil rights icon Rosa Parks.
Speaking in Washington last night, he stood over the comparison to the the hero of American civil rights:
Both Gerry Adams and Sinn Féin deputy leader Mary Lou McDonald marched in today's St Patrick's Day parade in New York, which included the LGBT community for the first time:
It's a beautiful day here. Walking with the United Irish Counties. Tremendous response from the thousands on 5th Ave pic.twitter.com/JPyAjWY3v1— Richard G McAuley (@richardgmcauley) March 17, 2016