A lawsuit challenging a Pennsylvania court's redrawing of the state's 18 congressional districts could be filed as early as Wednesday, according to the National Republican Congressional Committee.

The committee issued a statement Tuesday saying the lawsuit "will highlight the state supreme court's rushed decision that created chaos, confusion and unnecessary expense."

Republicans in Pennsylvania previously said they'd sue to block the court's map and argue that legislatures and governors, not courts, have the constitutional responsibility to draw congressional maps.

The court-imposed congressional map overhauls a Republican-drawn map widely viewed as among the nation's most gerrymandered.

It also gives Democrats a better shot at winning a couple more seats as the party tries to wrest control of the U.S. House.

President Donald Trump is encouraging Pennsylvania Republicans to challenge the map all the way to the U.S. Supreme Court, if necessary.

Trump tweeted Tuesday that Republicans' map "was correct! Don't let the Dems take elections away from you so that they can raise taxes & waste money!"

The Democratic-majority Pennsylvania Supreme Court voted 4-3 on Monday to impose a new map for the state's 18 congressional districts, effective for the May 15 primary.