The organizers of a planned four-day rally on immigration in Washington, DC, are inviting truckers to join in.

The rally – planned for April 22-25 – is being put together by a Washington, DC-based group called the Federation for American Immigration Reform, or FAIR for short. FAIR opposes guest worker programs and amnesty for illegal immigrants.

They’re hoping truckers who are upset about plans for cross-border trucking between the U.S. and Mexico will take part in the rally.