Mr McCausland condemned the BBC's progress on Ulster Scots as unacceptable and untenable.
The Ulster Scots Agency is one of the cultural cross-border bodies set up under the Good Friday peace agreement.
The Ulster-Scots Agency is a cross-border government agency set up under the Good Friday Agreement to promote the Ulster-Scots language and culture.
St Patrick's Heritage Association, which has links to the Ulster Scots Heritage Council, is attempting to secure funding for what it terms a 'cross-community' parade next year.
BBC: News | Northern Ireland | Rivals plan separate St Patrick's Day parades
These are: inland waterways, the promotion of the Irish and Ulster Scots languages, food safety, aquaculture and marine matters, trade and business development and special European Union programmes.
He said progress on Ulster Scots programming was extremely slow, claiming only two programmes had been made on Ulster Scots in the past 10 years and called for equality.
They will implement all-island laws on inland waterways, the promotion of the Irish and Ulster Scots languages, food safety, aquaculture and marine matters, trade and business development and special European Union programmes.
Chairman of the Ulster Scots Agency, Ulster Unionist peer Lord Laird, confirmed Mr Mallon had been in the United States to attend receptions in Washington as part of the St Patrick's week celebrations.
Speaking on Wednesday, he said that "the establishment of an Institute of Ulster-Scots Studies offered a unique opportunity to promote the understanding of Ulster-Scots' language, history and culture, not only within the context of Northern Ireland but beyond".
The minister said he would bring forward a minority languages strategy to cover both Ulster-Scots and Irish.
It is hoped local students will take up undergraduate courses in the Ulster-Scots language, history and culture, as well as attracting postgraduate research and PhD's.
Among usual residents aged three years and over, 11% had some ability in Irish in 2011 (compared to 10% in 2001), while 8.1% of people had some ability in Ulster-Scots.
Ulster captain Henry notched the Wolfhounds' opening try on five minutes after the Scots had lost possession in midfield.
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