A report says, at least, 200 Democrats in the US Congress are joining forces to file a legal case against President Donald Trump over receipt of payments from foreign governments via his businesses.
The complainants accuse President Trump of violating the constitution's emoluments clause, which prohibiting receipt of gifts without congressional approval.
Report says, this is the largest number of legislators ever to sue a US president.
State officials and private businesses are suing Mr Donald John Trump in similar cases.
The attorneys general of Maryland and the District of Columbia announced their lawsuit on Monday.
The White House has denied their allegations.
Nonetheless, the White House Spokesperson, Sean Spicer blamed "partisan politics" for the attorneys general lawsuit.
At least 30 senators and 166 representatives are involved.